HTC One M9 not responding?
If HTC One M9 does not respond when you touch the screen or press the
buttons, you can still restart it.
Press and hold the POWER and VOLUME UP buttons for at least 10
seconds. HTC One M9 then restarts.
Resetting HTC One M9 (Hard reset)
If HTC One M9 has a persistent problem that cannot be solved, you can perform a
factory reset (also called a hard reset or master reset). A factory reset reverts the phone
back to its initial state — the state before you turned on the phone for the first time.
Factory reset will remove all data on your phone storage, including apps
you've downloaded and installed, your accounts, your files, as well as system
and app data and settings. Be sure to back up any data and files you want to
keep before you do a factory reset.
A factory reset may not permanently erase all data from your phone,
including personal information.
Performing a factory reset from settings
1. From the Home screen, tap > Settings > Backup & reset.
228 Sync, backup, and reset
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