HTC droid dna Mode D'Emploi

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If you see buttons while viewing an app's battery use details, you
can tap them to adjust settings that affect battery usage, stop the
app, and more.
Checking battery history
Check how long you've been using Droid DNA by HTC since the last
charge. You can also see a chart that shows how long the screen has been
on, and how long you've been using connections like the mobile network or
Wi-Fi.
1. Slide the Notifications panel open, and then tap 
.
2. Tap Battery > History.
3. If you've used Droid DNA by HTC for a long time since the last
charge, swipe left or right to scale the graph that details battery
usage over time. 
You can also spread your fingers or pinch to scale the graph.
Your first week with your new phone
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