In our description database there are 3 solutions for performing hard reset for Samsung Galaxy S5 (octa-core).
Choose the first method and follow the steps to perform a hard reset. If the first solution does not work, try the next method.
Please remember! Hard reset will delete any and all data your device contains; like pictures, contacts, messages, apps etc. Everything. Samsung Galaxy S5 (octa-core) device will be brought back to the same configuration as that of a brand new device.
1. For starters, press and hold the Power button until your phone turns on.
2. Tap the *2767*3855# code into your phone. Next, press Call button to confirm.
3. After a few minutes your phone should reset & reboot. Congrats.