How to Find IMEI on Galaxy S3
To see the IMEI number on your Android device, do as follows:
1. Open "Setting" App
2. Scroll down and tap on "About Device"
3. Tap on "Status"
4. On ...
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If you enable Stay Awake mode on HTC One, then the screen will never sleep if you plug it to a charger. To learn how to keep HTC One screen while charging, do as follows:
1. Open "Settings" app
2. Tap "Developer Options"
3. Mark "Stay Awake"
If you want to change the setting of display time out, see: How to Change Screen Time Out on HTC One