Samsung Trender M380 hard reset
Use this method to hard reset your Samsung Trender phone: Enter *2767*3855#. Warning! All your data including contacts, messages etc. will be lost! Copy all your necessary data/Contacts/Messages etc. to SIM or make backup to your PC before full reset! Take out SIM card before full reset.
Resetting Your Phone
Resetting the phone restores all of the factory defaults,
including the ringer types and display settings and
deletes all content stored on the phone.
1. Press HOME key and touch Main > Settings > Reset > Reset Phone. (A disclaimer is displayed.)
2. Read the disclaimer, write down the lock code, and touch Proceed.
3. Enter the lock code provided on the disclaimer by using the onscreen keypad.
4. Touch Done to restore your phone to its factory default state.