Alcatel One Touch Fierce hard resetWhen you are unable to power on your phone, there is another way to perform a factory data reset by using hardware keys. Press the Volume up key and the power key at same time until the screen lights up.
Factory data reset
Phone reset will erase all of your personal data from internal phone storage, including information about your Google Account, any other accounts, your system and application settings, and any downloaded applications. Resetting the phone does not erase any system software updates you’ve downloaded or any files on your microSD card, such as music or photos. If you mark the checkbox - Reserve the content of Phone storageII before touching Reset phone, any files stored on your phone’s storage will not be erased. If you reset the phone in this way, you’re prompted to re-enter the same kind of information as when you first started Android.
You can also hard reset your phone via menu
Factory data reset: Go to Settings.
Touch Backup and reset > Factory data reset
Touch Reset phone > Erase everything.
Alcatel One Touch Fierce soft reset or force reboot
Restart your phone by pressing and holding the Power key for about 7 seconds.