If your Device hang or auto restart, mobile slowly working you need to hard reset your smart phone. hard reset factory reset clear all data and user password so you should backup your all user data than reset your smart phone.
1. remove sim card and memory card and turn off your device.
2. press and hold volume down key + power key to turn on your device.
3. when show recovery menu release all keys.
4. use volume down key to select "wipe data/factory reset" Press Power Key To Confirm.
5. Than Select "yes--Delete All user Data" press power key.
6. When Finish This process use slect "reboot system now" and again press power key.
Wait few second Done
