If you have China Samsung S5 SM-G900H cell phone and you want to reset it to its factory default settings to remove pattern lock or due to some other reason like slow speed of mobile operating system or hang problem then hard reset is best way to do that. You can easily reset the device via settings if you have not set pattern lock. But in case of pattern lock forgot only easy way to reset this device is hard reset via hardware keys. We can reset pattern lock via Google account if we have and already given before set pattern lock.
First follow these instructions:
Charge your battery to the full
Hard Reset will erase all your data so backup your important data like phone-book, message, email, images, So take backup before hard reset your gadget.
How To Format China Samsung S5 SM-G900H Mobile To Unlock Pattern Lock
Power off China Samsung S5 SM-G900H mobile.
Press and hold Volume Down + Home and power button together until you see recovery menu.
After confirm the command mobile formatted and start up menu will appear. Reconfigure phone settings time and date and add your accounts.