Huawei Ascend Y330 hard reset using buttons
1. Turn off your Android Huawei Y330-U01 phone or pull out battery and reinsert it after a few seconds.
2. Press and hold both Volume UP + POWER buttons for about 15 sec. until Andorid recovery menu comes up.
3. Select Factory reset /wipe data. (scroll down with VOL down.)
4. Select / confirm with power. (or Vol UP key)
5. Scroll down to Yes -- delete all user data. Press power to confirm.
After all is done press power to reboot system now.
After data wipe has completed you are done. reset Huawei Y330 done.Or if your phone is responding to screen input, then open Settings from the Applications menu. Tap Backup & reset > Factory data reset; click Reset phone and then Erase everything to format your phone.