How to enter Alcatel OT-991D Recovery Mode and Hard reset.
- Turn off the device
- Press and hold Volume UP key + Power Key about 10 seconds
- Release all key when you see Android logo
- Press Home key to enter Recovery Mode
- Use Volume key to select Menu
- Use Left Sensitive key to Confirm or Execute Menu
Hard reset Alcatel OT-991D
- In Recovery Mode select wipe data / factory reset
- press Left Sensitive key to confirm
- select Yes — delete all user data, press Left Sensitive key to confirm
- select Reboot system now and confirm with Power key to finish hard reset
Warning! If you perform a hard reset, make sure to back up important data.