Sony Xperia E3 - Battery and power management

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Battery and power management

Your device has an embedded battery. You can keep track of your battery consumption

and see which applications are using the most power. You can also view an estimate of

how much time is left before your battery runs out. The estimated battery time is based

on your most recent usage pattern.
To make the battery last longer you can use one or more battery saving modes, which

include STAMINA mode, Low battery mode, Location-based Wi-Fi®, and Queue

background data mode. Each mode works in a different way and controls several power

consuming functions on your device.

To view which applications use the most battery power

1

From your Home screen, tap .

2

Find and tap

Settings > Power management > Battery usage.

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To view the estimated battery time

1

From your Home screen, tap .

2

Find and tap

Settings > Power management.

Improving battery time using STAMINA mode

Use STAMINA mode to automatically improve battery time when the battery reaches a

certain charge level. A function called Extended standby recognizes when your screen is

not active and can automatically disable Wi-Fi® and cellular data. Most applications then

become inactive. Once the screen becomes active again, your device starts to function

normally and all disabled functions resume. You can exclude some applications and

services from being paused in STAMINA mode.
STAMINA mode also has a feature that restricts hardware performance while you are

using your device, to save even more power. When this feature is activated, your device

can still function normally.

To activate STAMINA mode

1

From your Home screen, tap .

2

Find and tap

Settings > Power management.

3

Drag the slider beside

STAMINA mode to the right, then tap Activate, if

prompted. appears in the status bar once the battery reaches a set level.

To choose when to activate STAMINA mode

1

From your Home screen, tap .

2

Find and tap

Settings > Power management > STAMINA mode > Activation.

3

Drag the slider to adjust the battery level you want to activate STAMINA mode at.

4

Tap

OK.

appears in the status bar when the battery reaches the level you've set.

To activate the Extended standby function

1

From your Home screen, tap .

2

Find and tap

Settings > Power management, then tap STAMINA mode.

3

Mark the

Extended standby checkbox if it is not already marked, then tap

Activate, if prompted.

To select which applications to run in STAMINA mode

1

From your Home screen, tap .

2

Find and tap

Settings > Power management, then tap STAMINA mode.

3

Make sure the

Extended standby checkbox is marked, then tap Apps active in

standby > Add applications.

4

Scroll left or right to add or remove applications and services as desired.

5

When you're done, tap

Done.

To restrict the hardware performance

1

From your Home screen, tap .

2

Find and tap

Settings > Power management, then tap STAMINA mode.

3

Mark the

Extended usage checkbox, then tap Activate, if prompted.

If you notice a sharp reduction in performance when this function is activated, unmark the

Extended usage checkbox to deactivate it.

Improving battery time using Low battery mode

Use the

Low battery mode feature to automatically start saving power when the battery

reaches a certain charge level. You can set and readjust this charge level as desired. You

can also decide which functions to keep active, for example, mobile data traffic, Wi-Fi®

or auto-sync.

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To activate Low battery mode

1

From your Home screen, tap .

2

Find and tap

Settings > Power management.

3

Drag the slider beside

Low battery mode to the right.

4

If prompted, tap

Activate. appears in the status bar when the battery reaches

the charge level that you set.

To change the settings for Low battery mode

1

From your Home screen, tap .

2

Find and tap

Settings > Power management.

3

Make sure

Low battery mode is activated, then tap Low battery mode.

4

Change the settings, for example, to readjust the battery level.

Improving battery time using Location-based Wi-Fi®

The

Location-based Wi-Fi feature sets your device to only activate the Wi-Fi® function

when it comes within range of a saved Wi-Fi® network. This way you save battery power

but still have the convenience of automatic Wi-Fi® connections.

To activate the Location-based Wi-Fi® feature

1

From your Home screen, tap .

2

Find and tap

Settings > Power management.

3

Drag the slider beside

Location-based Wi-Fi to the right.

Improving battery time by queuing background data

You can improve battery performance by setting your device to send background data at

pre-defined intervals when you're not using it, that is, when the screen is not active.

To allow the queuing of background data

1

From your Home screen, tap .

2

Find and tap

Settings > Power management.

3

Mark the checkbox beside

Queue background data.