* When certain applications no longer function properly or if your Samsung Galaxy S5 is very slow, you can reset the device to its factory settings. This will reset the telephone to the settings it had when you first turned it on.
* Please note: your Samsung Galaxy S5 may request a security code, which, if necessary, can be found in the instructions of the Samsung Galaxy S5. Make sure you have them at hand.
* If you purchased a used device and do not know the code, you should ask the previous owner for it.
* Please note: resetting the device will erase all data and settings on the device. If necessary, make a backup on your computer.
* Select *Next* for step-by-step instructions to reset the Samsung Galaxy S5 to factory settings.
* Go to the Start screen.
* Choose *Apps*.
* Scroll down.
* Under *USER AND BACKUP*, choose *Backup and reset*.
* Choose *Factory data reset*.
* Choose *Erase everything*.
* All data and personal settings have been deleted from the Samsung Galaxy S5.
* The Samsung Galaxy S5 will automatically reset and reboot.
* The Samsung Galaxy S5 has been reset.