hanging and restart problem samsung grand 2

[AC Question]

i purchase samsung galaxy grand 2 mobile date 28 may 2014.but my mobile hang and restart 6 to 7 time in the day.so ply give me my mobile problem solution.

 

[B. Diddy]

Welcome to Android Central! Try booting into Recovery and wiping the cache partition, which won't erase any personal data. Follow the steps in this video, but instead of selecting Wipe Data/Factory Reset, make sure you select Wipe Cache Partition. When that's done, select Reboot System Now.

https://www.youtube.com/watch?v=0MH7W-JTk84

If that doesn't help, try unmounting the SD card (in Settings>Storage), removing it, and rebooting. A corrupt card can cause problems.