How to Hard reset Galaxy A3

1. At the absolute starting point hold down the Power key to switch off your phone.

2. Presently press and hold together: Volume Up + Home + Power button, until you see Samsung logo.

3. Discharge held keys when Recuperation Mode shows up on the screen.

4. At that point choose from menu "wipe data/factory reset" utilizing Volume buttons to explore and Power button to confirm.Restore SAMSUNG A300F System A3

5. Next pick "Yes - erase all client data" to confirm entire operation.

6. After that choose choice "reboot System now".Master Reset SAMSUNG A300F World A3

Well done!

Second technique: 

1. Watch that your telephone is on.

2. From the Principle Menu find and select Settings.

3. Tap Backup&Reset and after that Factory Data Reset.

4. A short time later pick Reset gadget.

5. To affirm your decision select Erase everything.

That's it.