device is freezing when open any option.
if you turn on your call phone but phone is only show nokia logo on screen then freezing. device any option not working properly.
your smart phone operating system is corrupted or any others flashing related problem you can fix this problem easily after flashing.
Before flash your device at first backup your all of user data. after flashing all data will be wipe so you should backup your all user data like contact, message, videos etc.