Original post by: BurnieG ,
To boot the HTC One into Safe Mode: 1. On the HTC One home screen, press and hold the Power button. 2. Next, tap and hold the Power off option. 3. When prompted to reboot to safe mode, tap Restart. 4. Once the reboot completes. You should see the Safe Mode label in the lower-left corner of the screen. '''To get out of the Safe Mode:''' 1. Just press and hold the Power button. 2. Select Restart. Another option: You can also press and hold the POWER and VOLUME UP buttons for at least 10 seconds. HTC One then restarts. This is called a soft reset which should bring it out of safe mode too.