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.