How to Change Wallpaper on HTC One
Like any other Android phones, you can easily change wallpaper on HTC One. There are 3 options to set new wallpaper: Live Wallpapers, from Gallery, ...
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By default screen rotation is enabled on Android HTC One, and the screen rotates as you rotate the phone. To turn off or disable screen rotation on HTC do as follows:
1. Open "Settings" app
2. Tap "Display, gestures and buttons"
3. to disable auto rotation, unmark "Auto Rotate Screen"