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Samsung Galaxy Q T589 hard reset
Press and hold the Power key and the T key on the QWERTY keyboard until you see Android system recovery screen.
Press Volume DOWN key to select wipe data / factory reset and then the Power key to select.
Press the Volume down to select Yes - Wipe user data.
Press the Power key.
Press the Volume down to scroll to Reboot system now.
Press the Power key again.
Factory Data Reset
From this menu you can reset your phone and sound settings to the factory default settings.
1. Press Main Menu button, then left Apps button and then tap (Settings) ->Privacy. (You will see a disclaimer.)
2. Touch Factory data reset - Reset phone.
3. If necessary, enter your password and touch Erase everything.
The phone resets to the factory default settings automatically and when finished displays the Home screen.
How to reset Samsung Gravity Touch 2, unlock Samsung Galaxy Q, Samsung Smart, Samsung GT2, reset Samsung SGH-T589
Use this method to hard reset your Samsung Galaxy Q Android: 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.