Hard Reset PANASONIC T11

First method:

At the beginning remove the battery and insert again into your phone.
Afterawrds press and hold two buttons Volume Up + Power simultaneously.
Release held keys when you see an orange screen on yours screen.
Then choose "wipe data/factory reset" using the Volume Down button to scroll and the Power button to confirm your choice.
Browse to option "Yes-detele all user data", and select that with Power key.
Reboot your phone by selecting the Reboot System Now
Wait until your phone restart.