Sony Xperia Z2 - Battery and power management

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Battery and power management

Your device has an embedded battery. The battery consumption varies depending on

the features used. To make the battery last longer, you should consider the following:

Keep track of your battery consumption.

Follow the general usage tips to improve battery performance.

Use a power-saving mode.
Your device is equipped with two STAMINA modes and Android power saving features to

help your device to reduce its battery consumption. Android power saving features run in

the background and you can activate or deactivate STAMINA mode or Ultra STAMINA

mode yourself.
The power saving features restrict background data to save power, so if you do not want

an application to be affected, you can exempt it in the Battery optimization menu.

System updates may change the available power-saving modes on your device.

To View Battery Consumption, Estimated Time, and Power-Saving Tips

1

From your

Home screen, tap .

2

Find and tap

Settings > Battery. An overview appears showing the battery

percentage and an estimated battery time.

3

Tap

SHOW BATTERY USAGE to view a list of features and services that have

consumed battery power since the last charging cycle. Tap an item to get

information on how to reduce its battery consumption.

You can configure, activate, and deactivate power-saving modes from

Settings > Battery.

To View Battery Consumption For Applications

1

From your

Home screen, tap .

2

Find and tap

Settings > Apps.

3

Select an application and review its battery consumption under

Battery usage.

General Usage Tips to Improve Battery Performance

The following tips can help you improve battery performance:

Lower the screen brightness level, see

Screen settings

on page 55.

Turn off Bluetooth®, Wi-Fi, and location services when you don't need these

features.

Turn off your device or use Airplane mode if you are in an area with no or low

network coverage. Otherwise, your device repeatedly scans for available

networks, and this consumes power.

Change the synchronization settings for your email, calendar, and contacts, see

Synchronizing with Online Accounts

on page 62.

Check the applications that have a high battery consumption and consider the

battery saving tips provided on your device for these applications.

Change the notification level for an application, see

Notifications

on page 29.

Turn off the location-sharing permission for an application, see

Application

settings

on page 56.

Uninstall applications that you are not using, see

Application screen

on page 25.

Use a Sony original handsfree device to listen to music. Handsfree devices

consume less battery than your device's loudspeakers.

Restart your device every now and then.

Battery Optimization

Battery optimization is a powerful and convenient built-in mode which improves your

battery life significantly by reducing battery consumption when you are not using the

device or certain apps.
This is achieved by suspending battery draining network activities, such as location

services, syncing, and Wi-Fi scanning in the background when you have not been using

your device for a long time.

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Phone calls and SMS messaging are not affected.
You cannot disable Battery optimization, but you can make exemptions for certain

applications.

To Make Specific Applications Exempt From Battery Optimization

1

From your

Home screen, tap .

2

Find and tap

Settings > Battery.

3

Tap and select

Battery optimization. You will see a list of applications that are not

optimized.

4

To add or remove applications from this list, tap

Apps and select or de-select an

application from the list to edit its optimization settings.

5

The list of applications that are not optimized will get updated according to your

settings.

You cannot exempt applications from being optimized by Ultra STAMINA mode.

You can also configure

Battery optimization from the Apps menu by tapping .

Power-Saving Modes

There are several power-saving modes available for you to use if you want to make your

battery last longer:

STAMINA

mode

Depending on the STAMINA level, different features will be restricted or disabled in order to

reduce battery consumption. These include rendering performance, animation and screen

brightness, image enhancement, background app data syncing, vibration (except for

incoming calls), streaming, and GPS (while the screen is off). appears in the status bar.

Ultra

STAMINA

mode

In addition to the features disabled by STAMINA mode, Ultra STAMINA mode disables

Cellular Data and Wi-Fi. The app selection is limited and widgets (except for Clock) are

disabled. Calling and SMS are still available. The Homescreen is changed to a special Ultra

STAMINA mode Homescreen and additional panes are disabled.

appears in the status

bar.

To Activate or Deactivate STAMINA Mode

1

From your

Home screen, tap .

2

Find and tap

Settings > Battery.

3

Tap

STAMINA mode and select the preferred option.

appears in the status bar when

STAMINA mode is active.

You can adjust the Auto-start percentage according to your preferences and exempt

applications from being optimized by STAMINA mode.

To Activate Ultra STAMINA Mode

1

From your

Home screen, tap .

2

Find and tap

Settings > Battery.

3

Tap

Ultra STAMINA mode, and then tap Activate.

4

Confirm to activate.
Your Homescreen is replaced by Ultra STAMINA mode Home and appears in the

status bar when

Ultra STAMINA mode is active. You cannot exempt applications from

being optimized by Ultra STAMINA mode.

To Deactivate Ultra STAMINA Mode

1

Drag down the status bar to access the Notification panel.

2

Tap

Deactivate Ultra STAMINA mode.

3

Tap

OK.

Deactivating Ultra STAMINA mode will restart your device.

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