Number of hours delivered by the battery of Apple iPhone 6s in 3G talk time and details about models from other brands with the same or similar talk time. Samsung Galaxy Tab A 9.7 LTE 14 h (6000 mAh. Power your HP laptop with this DENAQ NM-MU06055-6 6-cell lithium-ion battery that provides 10.8V and features a 4400 mAh capacity to keep your device ready for use. Built-in protection helps prevent overcharging.
After the debut of the iPhone in 2007, the developers at Apple worked hard to make their products stand out from the competition by introducing sleeker designs, clearer screens and more powerful capabilities. Clearly, it was a successful mission; since that initial release, the company has debuted 21 iPhone models with popular, impressive features like Siri and fingerprint sensors. But each new addition has come at a cost — the need for increasingly stronger batteries, so that the amount of time iPhones can go without charging isn't mere minutes thanks to all those exciting but battery-depleting new features.
- Information about the battery capacity and battery life of the Apple iPhone 6. Talk and stand-by times in 2G, 3G and 4G networks. Apple iPhone 6 is also known as Apple A1549, Apple A1586, Apple A1589.
- Information about the battery capacity and battery life of the Apple iPhone 6. Talk and stand-by times in 2G, 3G and 4G networks. Apple iPhone 6 is also known as Apple A1549, Apple A1586, Apple A1589.
Battery drain, unfortunately, is a common problem for iPhone users, and if your phone is always running low despite your best charging efforts, you might need to take it to an Apple Store for repairs or a replacement. Before doing that, though, compare your device's battery levels with the average charge lifespan for different iPhones under regular usage, to see if your phone is truly draining way faster than normal. Of course, if you've been using one of the older models for a number of years now and are seeing decreased battery life, that might just be normal wear and tear, so keep that in mind when comparing your battery life to the averages below.
iPhone 5 and iPhone 5s
Average battery life: Around 5 to 11 hours for both phones.
Released in 2012, the iPhone 5 featured a 1440 mAh battery, and Apple claimed a single charge on this device could last up to 225 hours if the phone wasn't in heavy use. But Engadget reported the iPhone 5 lasting just a little over 11 hours during its tests, while AnandTech's tests showed closer to an average of just five hours per charge, with the phone losing 10% to 15% of its charge each hour. Many users experienced similar results or malfunctioning batteries, and to this day, some people still lament the iPhone 5's short battery life.
The iPhone 5s has a bigger battery at 1560 mAh, but it still showed only slight improvements compared to the 5. Tech Radar did not find a single charge lasting the 10 hours Apple claimed the phone would when in regular use.
iPhone 6 and iPhone 6s
Average battery life: About 7 to 14 hours for both phones.
In 2014, Apple introduced a 1810 mAh battery for the iPhone 6. Tom's Guide found that the phone only lasted 7 hours and 25 minutes with continuous use, but at Trusted Reviews, tester Evan Kypreos had better results: his iPhone 6 lasted 14 hours when in heavy usage (at 50% brightness), and up to 35 hours when not being used at all.
The iPhone 6s fared worse, due to its smaller, 1715 mAH battery. Although it seemed to be a downgrade, Engadget stated the smaller battery was to make room for the new 3D Touch hardware on this model. Apple claimed the 6s was more energy efficient and would offer the same battery life as the 6, but Trusted Reviews did not find that to be the case, reporting the 6s having 5% less battery capacity than the 6.
iPhone 7 and iPhone 7 Plus
Average battery life: About 10 to 12 hours for both phones.
2016's iPhone 7 came without a headphone jack, in order to make room for better cameras and a bigger battery, according to The Verge. Indeed, the batteries for both models were impressive: the iPhone 7 had an 1960 mAh battery, while the 7 Plus had a 2900 mAh battery. According to Apple, the greater size was meant to increase the 7's charge time by two hours from the 6s.
In tests, The Verge found the iPhone 7 lasting about 10 hours, and the 7 Plus lasting 12 hours, when in medium usage. Tech Radar's testing found the iPhone 7 barely making it through a day, and overall lasting just seven minutes more than the 6s. The site's review of the iPhone 7 Plus was more positive, though, with the phone apparently lasting a full day of heavy usage.
iPhone 8 and iPhone 8 Plus
Average battery life: About 13 hours for both phones.
In 2017, Apple released the iPhone 8 with a 1821 mAh battery, noticeably smaller than the iPhone 7's and bad news for anyone who wasn't impressed by that phone's battery life. Tech Radar noted that the iPhone 8's battery life only lasted about 13 hours of regular use, and Trusted Reviews received a similar result during its tests, only getting an iPhone 8 to live through the day by constantly changing settings and adjusting the screen brightness.
The iPhone 8 Plus also had a smaller battery than the 7 Plus, with a capacity of 2675 mAh. Trusted Reviews did not see the battery life on this model change much from either the 7 Plus or the 8, but noted the 8 Plus did not require constant adjustments to last the day.
iPhone X, iPhone XS Max and iPhone XR
Average battery life: About 10 to 17 hours for all phones.
The iPhone X, out in 2017, contained a 2716 mAh battery that Apple claimed would allow the phone to last two hours longer than the 7. Trusted Reviews found this to be true, praising the fact that the phone won't hit 'red' before the workday ends after regular use. Tech Radar managed to run the phone down after 12 hours of heavy use, concluding that while the iPhone X's battery life 'isn't mind-blowing, it's certainly better than some iPhones of old — it's more than acceptable.' Tom's Guide found significantly less impressive results from their rigorous testing, with the X's battery lasting just short of 10 hours.
The XS Max (released in 2018) fared no better with its larger, 3174 mAh battery lasting only 10 hours and 38 minutes. However, Trusted Reviews kept the XS Max lasting throughout the day after normal, heavy usage, and Tech Radar had a similar conclusion, stating that the phone lasted on a single, full charge from 7 a.m. to midnight with moderate to heavy use.
2018's iPhone XR impressed Tech Radar, who declared this model to have 'the best battery life of any phone from [Apple].' Coming into the X series with a 2942 mAh battery, smaller than the XS, the phone's energy efficiency kept it from burning too much battery life all at once. Tech Radar managed to keep an iPhone XR going from 5:30 a.m/ to 11:00 p.m. with still some charge left to spare.
Apple continues to develop and improve its iPhones each year, but as more features requiring extra energy and hardware space get added to each new model, battery life will remain a concern. The company has taken steps in the right direction with models such as the XR, and it'll hopefully only improve from there.
Your iPhone is designed to deliver an experience that is simple and easy to use. This is only possible through a combination of advanced technologies and sophisticated engineering. One important technology area is battery and performance. Batteries are a complex technology, and a number of variables contribute to battery performance and related iPhone performance. All rechargeable batteries are consumables and have a limited lifespan—eventually their capacity and performance decline such that they need to be replaced. As batteries age, it can contribute to changes in iPhone performance. We created this information for those who would like to learn more.
Iphone 6 Plus Battery Mah
About lithium-ion batteries
iPhone batteries use lithium-ion technology. Compared with older generations of battery technology, lithium-ion batteries charge faster, last longer, and have a higher power density for more battery life in a lighter package. Rechargeable lithium-ion technology currently provides the best technology for your device. Learn more about lithium-ion batteries.
How to maximize battery performance
'Battery life' is the amount of time a device runs before it needs to be recharged. 'Battery lifespan' is the amount of time a battery lasts until it needs to be replaced. One factor affecting battery life and lifespan is the mix of things you do with your device. No matter how you use it, there are ways to help. A battery's lifespan is related to its 'chemical age,' which is more than just the passage of time. It includes different factors, such as the number of charge cycles and how it was cared for. Follow these tips to maximize battery performance and help extend battery lifespan. For example, keep iPhone half-charged when it's stored for the long term. Also avoid charging or leaving iPhone in hot environments, including direct sun exposure, for extended periods of time.
When batteries chemically age
All rechargeable batteries are consumable components that become less effective as they chemically age.
As lithium-ion batteries chemically age, the amount of charge they can hold diminishes, resulting in shorter amounts of time before a device needs to be recharged. This can be referred to as the battery's maximum capacity—the measure of battery capacity relative to when it was new. In addition, a battery's ability to deliver maximum instantaneous performance, or 'peak power,' may decrease. In order for a phone to function properly, the electronics must be able to draw upon instantaneous power from the battery. One attribute that affects this instantaneous power delivery is the battery's impedance. A battery with a high impedance may be unable to provide sufficient power to the system that needs it. A battery's impedance can increase if a battery has a higher chemical age. A battery's impedance will temporarily increase at a low state of charge and in a cold temperature environment. When coupled with a higher chemical age, the impedance increase will be more significant. These are characteristics of battery chemistry that are common to all lithium-ion batteries in the industry.
When power is pulled from a battery with a higher level of impedance, the battery's voltage will drop to a greater degree. Electronic components require a minimum voltage to properly operate. This includes the device's internal storage, power circuits, and the battery itself. The power management system determines the capability of the battery to supply this power, and manages the loads in order to maintain operations. When the operations can no longer be supported with the full capabilities of the power management system, the system will perform a shutdown to preserve these electronic components. While this shutdown is intentional from the device perspective, it may be unexpected by the user.
Preventing unexpected shutdowns
With a low battery state of charge, a higher chemical age, or colder temperatures, users are more likely to experience unexpected shutdowns. In extreme cases, shutdowns can occur more frequently, thereby rendering the device unreliable or unusable. For iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPhone SE (1st generation), iPhone 7, and iPhone 7 Plus, iOS dynamically manages performance peaks to prevent the device from unexpectedly shutting down so that the iPhone can still be used. This performance management feature is specific to iPhone and does not apply to any other Apple products. Starting with iOS 12.1, iPhone 8, iPhone 8 Plus, and iPhone X include this feature; iPhone XS, iPhone XS Max, and iPhone XR include this feature starting with iOS 13.1. The effects of performance management on these newer models may be less noticeable due to their more advanced hardware and software design.
This performance management works by looking at a combination of the device temperature, battery state of charge, and battery impedance. Only if these variables require it, iOS will dynamically manage the maximum performance of some system components, such as the CPU and GPU, in order to prevent unexpected shutdowns. As a result, the device workloads will self-balance, allowing a smoother distribution of system tasks, rather than larger, quick spikes of performance all at once. In some cases, a user may not notice any differences in daily device performance. The level of perceived change depends on how much performance management is required for a particular device.
In cases that require more extreme forms of this performance management, the user may notice effects such as:
- Longer app launch times
- Lower frame rates while scrolling
- Backlight dimming (which can be overridden in Control Center)
- Lower speaker volume by up to -3dB
- Gradual frame rate reductions in some apps
- During the most extreme cases, the camera flash will be disabled as visible in the camera UI
- Apps refreshing in background may require reloading upon launch
Many key areas are not impacted by this performance management feature. Some of these include:
- Cellular call quality and networking throughput performance
- Captured photo and video quality
- GPS performance
- Location accuracy
- Sensors like gyroscope, accelerometer, barometer
- Apple Pay
For a low battery state of charge and colder temperatures, performance management changes are temporary. If a device battery has chemically aged far enough, performance management changes may be more lasting. This is because all rechargeable batteries are consumables and have a limited lifespan, eventually needing to be replaced. If you are impacted by this and would like to improve your device performance, replacing your device battery can help.
For iOS 11.3 and later
iOS 11.3 and later improve this performance management feature by periodically assessing the level of performance management necessary to avoid unexpected shutdowns. If the battery health is able to support the observed peak power requirements, the amount of performance management will be lowered. If an unexpected shutdown occurs again, then performance management will increase. This assessment is ongoing, allowing more adaptive performance management.
iPhone 8 and later use a more advanced hardware and software design that provides a more accurate estimation of both power needs and the battery's power capability to maximize overall system performance. This allows a different performance management system that more precisely allows iOS to anticipate and avoid an unexpected shutdown. As a result, the impacts of performance management may be less noticeable on iPhone 8 and later. Over time, the rechargeable batteries in all iPhone models will diminish in their capacity and peak performance and will eventually need to be replaced.
Battery Health
For iPhone 6 and later, iOS 11.3 and later add new features to show battery health and recommend if a battery needs to be replaced. These can be found in Settings > Battery > Battery Health.
Additionally, users can see if the performance management feature that dynamically manages maximum performance to prevent unexpected shutdowns is on and can choose to turn it off. This feature is enabled only after an unexpected shutdown first occurs on a device with a battery that has diminished ability to deliver maximum instantaneous power. This feature applies to iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPhone SE (1st generation), iPhone 7, and iPhone 7 Plus. Starting with iOS 12.1, iPhone 8, iPhone 8 Plus, and iPhone X include this feature; iPhone XS, iPhone XS Max, and iPhone XR include this feature starting with iOS 13.1. The effects of performance management on these newer models may be less noticeable due to their more advanced hardware and software design.
(Note: Devices updating from iOS 11.2.6 or earlier will initially have performance management disabled; it will be reenabled if the device subsequently experiences an unexpected shutdown.)
All iPhone models include fundamental performance management to ensure that the battery and overall system operates as designed and internal components are protected. This includes behavior in hot or cold temperatures, as well as internal voltage management. This type of performance management is required for safety and expected function, and cannot be turned off.
Your battery's maximum capacity
The Battery Health screen includes information on maximum battery capacity and peak performance capability.
Maximum battery capacity measures the device battery capacity relative to when it was new. A battery will have lower capacity as the battery chemically ages which may result in fewer hours of usage between charges. Depending upon the length of time between when the iPhone was made and when it is activated, your battery capacity may show as slightly less than 100%.
A normal battery is designed to retain up to 80% of its original capacity at 500 complete charge cycles when operating under normal conditions. The one-year warranty includes service coverage for a defective battery. If it is out of warranty, Apple offers battery service for a charge. Learn more about charge cycles.
As your battery health degrades, so can its ability to deliver peak performance. The Battery Health screen includes a section for Peak Performance Capability where the following messages may appear.
Performance is normal
When the battery condition can support normal peak performance and does not have the performance management features applied, you'll see this message:
Your battery is currently supporting normal peak performance.
Iphone 6 Battery Mah Price In Pakistan
Performance management applied
When the performance management features have been applied, you'll see this message:
This iPhone has experienced an unexpected shutdown because the battery was unable to deliver the necessary peak power. Performance management has been applied to help prevent this from happening again. Disable…
Note that if you disable performance management, you can't turn it back on. It will be turned on again automatically if an unexpected shutdown occurs. The option to disable will also be available.
Battery health unknown
If iOS is unable to determine the device battery health, you'll see this message:
This iPhone is unable to determine battery health. An Apple Authorized Service Provider can service the battery. More about service options…
This may be due to having an improperly installed battery or an unknown battery part.
Performance management turned off
If you disable the applied performance management feature, you'll see this message:
Iphone 6 Battery Mah Capacity
This iPhone has experienced an unexpected shutdown because the battery was unable to deliver the necessary peak power. You have manually disabled performance management protections.
If the device experiences another unexpected shutdown, the performance management features will be re-applied. The option to disable will also be available.
Battery health degraded
Number of hours delivered by the battery of Apple iPhone 6s in 3G talk time and details about models from other brands with the same or similar talk time. Samsung Galaxy Tab A 9.7 LTE 14 h (6000 mAh. Power your HP laptop with this DENAQ NM-MU06055-6 6-cell lithium-ion battery that provides 10.8V and features a 4400 mAh capacity to keep your device ready for use. Built-in protection helps prevent overcharging.
After the debut of the iPhone in 2007, the developers at Apple worked hard to make their products stand out from the competition by introducing sleeker designs, clearer screens and more powerful capabilities. Clearly, it was a successful mission; since that initial release, the company has debuted 21 iPhone models with popular, impressive features like Siri and fingerprint sensors. But each new addition has come at a cost — the need for increasingly stronger batteries, so that the amount of time iPhones can go without charging isn't mere minutes thanks to all those exciting but battery-depleting new features.
- Information about the battery capacity and battery life of the Apple iPhone 6. Talk and stand-by times in 2G, 3G and 4G networks. Apple iPhone 6 is also known as Apple A1549, Apple A1586, Apple A1589.
- Information about the battery capacity and battery life of the Apple iPhone 6. Talk and stand-by times in 2G, 3G and 4G networks. Apple iPhone 6 is also known as Apple A1549, Apple A1586, Apple A1589.
Battery drain, unfortunately, is a common problem for iPhone users, and if your phone is always running low despite your best charging efforts, you might need to take it to an Apple Store for repairs or a replacement. Before doing that, though, compare your device's battery levels with the average charge lifespan for different iPhones under regular usage, to see if your phone is truly draining way faster than normal. Of course, if you've been using one of the older models for a number of years now and are seeing decreased battery life, that might just be normal wear and tear, so keep that in mind when comparing your battery life to the averages below.
iPhone 5 and iPhone 5s
Average battery life: Around 5 to 11 hours for both phones.
Released in 2012, the iPhone 5 featured a 1440 mAh battery, and Apple claimed a single charge on this device could last up to 225 hours if the phone wasn't in heavy use. But Engadget reported the iPhone 5 lasting just a little over 11 hours during its tests, while AnandTech's tests showed closer to an average of just five hours per charge, with the phone losing 10% to 15% of its charge each hour. Many users experienced similar results or malfunctioning batteries, and to this day, some people still lament the iPhone 5's short battery life.
The iPhone 5s has a bigger battery at 1560 mAh, but it still showed only slight improvements compared to the 5. Tech Radar did not find a single charge lasting the 10 hours Apple claimed the phone would when in regular use.
iPhone 6 and iPhone 6s
Average battery life: About 7 to 14 hours for both phones.
In 2014, Apple introduced a 1810 mAh battery for the iPhone 6. Tom's Guide found that the phone only lasted 7 hours and 25 minutes with continuous use, but at Trusted Reviews, tester Evan Kypreos had better results: his iPhone 6 lasted 14 hours when in heavy usage (at 50% brightness), and up to 35 hours when not being used at all.
The iPhone 6s fared worse, due to its smaller, 1715 mAH battery. Although it seemed to be a downgrade, Engadget stated the smaller battery was to make room for the new 3D Touch hardware on this model. Apple claimed the 6s was more energy efficient and would offer the same battery life as the 6, but Trusted Reviews did not find that to be the case, reporting the 6s having 5% less battery capacity than the 6.
iPhone 7 and iPhone 7 Plus
Average battery life: About 10 to 12 hours for both phones.
2016's iPhone 7 came without a headphone jack, in order to make room for better cameras and a bigger battery, according to The Verge. Indeed, the batteries for both models were impressive: the iPhone 7 had an 1960 mAh battery, while the 7 Plus had a 2900 mAh battery. According to Apple, the greater size was meant to increase the 7's charge time by two hours from the 6s.
In tests, The Verge found the iPhone 7 lasting about 10 hours, and the 7 Plus lasting 12 hours, when in medium usage. Tech Radar's testing found the iPhone 7 barely making it through a day, and overall lasting just seven minutes more than the 6s. The site's review of the iPhone 7 Plus was more positive, though, with the phone apparently lasting a full day of heavy usage.
iPhone 8 and iPhone 8 Plus
Average battery life: About 13 hours for both phones.
In 2017, Apple released the iPhone 8 with a 1821 mAh battery, noticeably smaller than the iPhone 7's and bad news for anyone who wasn't impressed by that phone's battery life. Tech Radar noted that the iPhone 8's battery life only lasted about 13 hours of regular use, and Trusted Reviews received a similar result during its tests, only getting an iPhone 8 to live through the day by constantly changing settings and adjusting the screen brightness.
The iPhone 8 Plus also had a smaller battery than the 7 Plus, with a capacity of 2675 mAh. Trusted Reviews did not see the battery life on this model change much from either the 7 Plus or the 8, but noted the 8 Plus did not require constant adjustments to last the day.
iPhone X, iPhone XS Max and iPhone XR
Average battery life: About 10 to 17 hours for all phones.
The iPhone X, out in 2017, contained a 2716 mAh battery that Apple claimed would allow the phone to last two hours longer than the 7. Trusted Reviews found this to be true, praising the fact that the phone won't hit 'red' before the workday ends after regular use. Tech Radar managed to run the phone down after 12 hours of heavy use, concluding that while the iPhone X's battery life 'isn't mind-blowing, it's certainly better than some iPhones of old — it's more than acceptable.' Tom's Guide found significantly less impressive results from their rigorous testing, with the X's battery lasting just short of 10 hours.
The XS Max (released in 2018) fared no better with its larger, 3174 mAh battery lasting only 10 hours and 38 minutes. However, Trusted Reviews kept the XS Max lasting throughout the day after normal, heavy usage, and Tech Radar had a similar conclusion, stating that the phone lasted on a single, full charge from 7 a.m. to midnight with moderate to heavy use.
2018's iPhone XR impressed Tech Radar, who declared this model to have 'the best battery life of any phone from [Apple].' Coming into the X series with a 2942 mAh battery, smaller than the XS, the phone's energy efficiency kept it from burning too much battery life all at once. Tech Radar managed to keep an iPhone XR going from 5:30 a.m/ to 11:00 p.m. with still some charge left to spare.
Apple continues to develop and improve its iPhones each year, but as more features requiring extra energy and hardware space get added to each new model, battery life will remain a concern. The company has taken steps in the right direction with models such as the XR, and it'll hopefully only improve from there.
Your iPhone is designed to deliver an experience that is simple and easy to use. This is only possible through a combination of advanced technologies and sophisticated engineering. One important technology area is battery and performance. Batteries are a complex technology, and a number of variables contribute to battery performance and related iPhone performance. All rechargeable batteries are consumables and have a limited lifespan—eventually their capacity and performance decline such that they need to be replaced. As batteries age, it can contribute to changes in iPhone performance. We created this information for those who would like to learn more.
Iphone 6 Plus Battery Mah
About lithium-ion batteries
iPhone batteries use lithium-ion technology. Compared with older generations of battery technology, lithium-ion batteries charge faster, last longer, and have a higher power density for more battery life in a lighter package. Rechargeable lithium-ion technology currently provides the best technology for your device. Learn more about lithium-ion batteries.
How to maximize battery performance
'Battery life' is the amount of time a device runs before it needs to be recharged. 'Battery lifespan' is the amount of time a battery lasts until it needs to be replaced. One factor affecting battery life and lifespan is the mix of things you do with your device. No matter how you use it, there are ways to help. A battery's lifespan is related to its 'chemical age,' which is more than just the passage of time. It includes different factors, such as the number of charge cycles and how it was cared for. Follow these tips to maximize battery performance and help extend battery lifespan. For example, keep iPhone half-charged when it's stored for the long term. Also avoid charging or leaving iPhone in hot environments, including direct sun exposure, for extended periods of time.
When batteries chemically age
All rechargeable batteries are consumable components that become less effective as they chemically age.
As lithium-ion batteries chemically age, the amount of charge they can hold diminishes, resulting in shorter amounts of time before a device needs to be recharged. This can be referred to as the battery's maximum capacity—the measure of battery capacity relative to when it was new. In addition, a battery's ability to deliver maximum instantaneous performance, or 'peak power,' may decrease. In order for a phone to function properly, the electronics must be able to draw upon instantaneous power from the battery. One attribute that affects this instantaneous power delivery is the battery's impedance. A battery with a high impedance may be unable to provide sufficient power to the system that needs it. A battery's impedance can increase if a battery has a higher chemical age. A battery's impedance will temporarily increase at a low state of charge and in a cold temperature environment. When coupled with a higher chemical age, the impedance increase will be more significant. These are characteristics of battery chemistry that are common to all lithium-ion batteries in the industry.
When power is pulled from a battery with a higher level of impedance, the battery's voltage will drop to a greater degree. Electronic components require a minimum voltage to properly operate. This includes the device's internal storage, power circuits, and the battery itself. The power management system determines the capability of the battery to supply this power, and manages the loads in order to maintain operations. When the operations can no longer be supported with the full capabilities of the power management system, the system will perform a shutdown to preserve these electronic components. While this shutdown is intentional from the device perspective, it may be unexpected by the user.
Preventing unexpected shutdowns
With a low battery state of charge, a higher chemical age, or colder temperatures, users are more likely to experience unexpected shutdowns. In extreme cases, shutdowns can occur more frequently, thereby rendering the device unreliable or unusable. For iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPhone SE (1st generation), iPhone 7, and iPhone 7 Plus, iOS dynamically manages performance peaks to prevent the device from unexpectedly shutting down so that the iPhone can still be used. This performance management feature is specific to iPhone and does not apply to any other Apple products. Starting with iOS 12.1, iPhone 8, iPhone 8 Plus, and iPhone X include this feature; iPhone XS, iPhone XS Max, and iPhone XR include this feature starting with iOS 13.1. The effects of performance management on these newer models may be less noticeable due to their more advanced hardware and software design.
This performance management works by looking at a combination of the device temperature, battery state of charge, and battery impedance. Only if these variables require it, iOS will dynamically manage the maximum performance of some system components, such as the CPU and GPU, in order to prevent unexpected shutdowns. As a result, the device workloads will self-balance, allowing a smoother distribution of system tasks, rather than larger, quick spikes of performance all at once. In some cases, a user may not notice any differences in daily device performance. The level of perceived change depends on how much performance management is required for a particular device.
In cases that require more extreme forms of this performance management, the user may notice effects such as:
- Longer app launch times
- Lower frame rates while scrolling
- Backlight dimming (which can be overridden in Control Center)
- Lower speaker volume by up to -3dB
- Gradual frame rate reductions in some apps
- During the most extreme cases, the camera flash will be disabled as visible in the camera UI
- Apps refreshing in background may require reloading upon launch
Many key areas are not impacted by this performance management feature. Some of these include:
- Cellular call quality and networking throughput performance
- Captured photo and video quality
- GPS performance
- Location accuracy
- Sensors like gyroscope, accelerometer, barometer
- Apple Pay
For a low battery state of charge and colder temperatures, performance management changes are temporary. If a device battery has chemically aged far enough, performance management changes may be more lasting. This is because all rechargeable batteries are consumables and have a limited lifespan, eventually needing to be replaced. If you are impacted by this and would like to improve your device performance, replacing your device battery can help.
For iOS 11.3 and later
iOS 11.3 and later improve this performance management feature by periodically assessing the level of performance management necessary to avoid unexpected shutdowns. If the battery health is able to support the observed peak power requirements, the amount of performance management will be lowered. If an unexpected shutdown occurs again, then performance management will increase. This assessment is ongoing, allowing more adaptive performance management.
iPhone 8 and later use a more advanced hardware and software design that provides a more accurate estimation of both power needs and the battery's power capability to maximize overall system performance. This allows a different performance management system that more precisely allows iOS to anticipate and avoid an unexpected shutdown. As a result, the impacts of performance management may be less noticeable on iPhone 8 and later. Over time, the rechargeable batteries in all iPhone models will diminish in their capacity and peak performance and will eventually need to be replaced.
Battery Health
For iPhone 6 and later, iOS 11.3 and later add new features to show battery health and recommend if a battery needs to be replaced. These can be found in Settings > Battery > Battery Health.
Additionally, users can see if the performance management feature that dynamically manages maximum performance to prevent unexpected shutdowns is on and can choose to turn it off. This feature is enabled only after an unexpected shutdown first occurs on a device with a battery that has diminished ability to deliver maximum instantaneous power. This feature applies to iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPhone SE (1st generation), iPhone 7, and iPhone 7 Plus. Starting with iOS 12.1, iPhone 8, iPhone 8 Plus, and iPhone X include this feature; iPhone XS, iPhone XS Max, and iPhone XR include this feature starting with iOS 13.1. The effects of performance management on these newer models may be less noticeable due to their more advanced hardware and software design.
(Note: Devices updating from iOS 11.2.6 or earlier will initially have performance management disabled; it will be reenabled if the device subsequently experiences an unexpected shutdown.)
All iPhone models include fundamental performance management to ensure that the battery and overall system operates as designed and internal components are protected. This includes behavior in hot or cold temperatures, as well as internal voltage management. This type of performance management is required for safety and expected function, and cannot be turned off.
Your battery's maximum capacity
The Battery Health screen includes information on maximum battery capacity and peak performance capability.
Maximum battery capacity measures the device battery capacity relative to when it was new. A battery will have lower capacity as the battery chemically ages which may result in fewer hours of usage between charges. Depending upon the length of time between when the iPhone was made and when it is activated, your battery capacity may show as slightly less than 100%.
A normal battery is designed to retain up to 80% of its original capacity at 500 complete charge cycles when operating under normal conditions. The one-year warranty includes service coverage for a defective battery. If it is out of warranty, Apple offers battery service for a charge. Learn more about charge cycles.
As your battery health degrades, so can its ability to deliver peak performance. The Battery Health screen includes a section for Peak Performance Capability where the following messages may appear.
Performance is normal
When the battery condition can support normal peak performance and does not have the performance management features applied, you'll see this message:
Your battery is currently supporting normal peak performance.
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Performance management applied
When the performance management features have been applied, you'll see this message:
This iPhone has experienced an unexpected shutdown because the battery was unable to deliver the necessary peak power. Performance management has been applied to help prevent this from happening again. Disable…
Note that if you disable performance management, you can't turn it back on. It will be turned on again automatically if an unexpected shutdown occurs. The option to disable will also be available.
Battery health unknown
If iOS is unable to determine the device battery health, you'll see this message:
This iPhone is unable to determine battery health. An Apple Authorized Service Provider can service the battery. More about service options…
This may be due to having an improperly installed battery or an unknown battery part.
Performance management turned off
If you disable the applied performance management feature, you'll see this message:
Iphone 6 Battery Mah Capacity
This iPhone has experienced an unexpected shutdown because the battery was unable to deliver the necessary peak power. You have manually disabled performance management protections.
If the device experiences another unexpected shutdown, the performance management features will be re-applied. The option to disable will also be available.
Battery health degraded
If battery health has degraded significantly, the below message will also appear:
Your battery's health is significantly degraded. An Apple Authorized Service Provider can replace the battery to restore full performance and capacity. More about service options…
This message does not indicate a safety issue. Your battery can still be used. However, you may be experiencing more noticeable battery and performance issues. A new replacement battery will improve your experience.
Important Battery Message
If you see the message below, it means the battery in your iPhone is unable to be verified. This message applies to iPhone XS, iPhone XS Max, iPhone XR, and later.
Unable to verify this iPhone has a genuine Apple battery. Health information not available for this battery.Learn more...
Reported battery health information is not available. To have your battery checked, contact an Apple Authorized Service Provider. More about service options.
Learn more about this message as it appears on iPhone 11 and iPhone 11 Pro.
Getting further assistance
If your device performance has been impacted by an aged battery and you would like to get help with a battery replacement, contact Apple Support for service options.
Learn more about battery service and recycling.
Recalibration of battery health reporting on iPhone 11, iPhone 11 Pro, and iPhone 11 Pro Max
iOS 14.5 and later includes an update where the battery health reporting system will recalibrate maximum battery capacity and peak performance capability on iPhone 11, iPhone 11 Pro, and iPhone 11 Pro Max to address inaccurate estimates of battery health reporting for some users.
Learn more about recalibration of battery health reporting in iOS 14.5.
