Hard Reset SAMSUNG I9506 Galaxy S4 LTE

First method:

First power off your phone.

Hard Reset SAMSUNG I9506 Galaxy S4

Then press and hold together 3 keys: Volume Up + Home button + Power button.

 

 

Hard Reset SAMSUNG I9506 Galaxy S4Add caption

 

When you see logo Samsung, then release all holded keys.
Next select option "wipe data/factory reset" -> use Volume buttons to browse, and Power button to confirm option.

Hard Reset SAMSUNG I9506 Galaxy S4

Now choose "yes" with Volume Down, and confirm with Power button.

Hard Reset SAMSUNG I9506 Galaxy S4

After that press Power button, to confirm option: "reboot".

Hard Reset SAMSUNG I9506 Galaxy S4

Second method:

Turn on you cell phone.

 

Hard Reset SAMSUNG I9506 Galaxy S4

After that browse to Settings -> User and Backup -> Factory Data Reset.
Next please confirm info on your screen.
That's all.

Third method:

Switch on device.

Hard Reset SAMSUNG I9506 Galaxy S4

Dial or press number to call: *2767*3855#
That number code will force format on device.

WARNING !
Hard Reset will erase all of your data
All described operations you are doing at your own risk.