T-Mobile SDA II hard reset hard reset with keys
Power off phone. Press both LEFT and RIGHT SOFT keys, then press POWER for a few sec. Keep holding these 3 buttons until you see
"Press 0 to restore factory default, other keys to Quit."
Press 0 to hard reset T-Mobile SDA II hard reset.
First, turn off the phone.
At the same time, press & hold the Left and Right Soft Key, (keep pressing 2 keys) + press the Power button once for 2 sec.
Press 0 button when it asks.
T-Mobile SDA II hard reset hard reset will take a few minutes. Be patient.
To access this menu, press Start in the Home screen > Accessories > Clear storage
Reset all your mobile phone settings to the default. Use with care as this will
delete ALL your data.