Take A Screenshot; Extend Battery Life - Microsoft Lumia 640 User Manual

Take a screenshot

You can take screenshots of what's on your phone screen and use them like any photos.
1. Press the volume up key and the power key at the same time.
2. To view or manage the screenshots you've taken, tap Photos > albums > Screenshots.

Extend battery life

Get the most out of your phone while getting the battery life you need. There are steps you
can take to save power on your phone.
To save power:
Charge wisely
Select only the sounds that you need Mute unnecessary sounds, such as key press
Use wired headphones
Use Battery Saver
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Always charge the battery fully.
sounds. On the start screen, swipe down from the
top of the screen, tap ALL SETTINGS > ringtones
+sounds, and select which sounds to keep.
Use wired headphones, rather than the
speakerphone.
You can set your phone to automatically save power
when the battery charge level is low. To check the
battery status, and to switch Battery Saver on, tap
Battery Saver.
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