update

[rohit]

my phone not working properly after update it crashes every time and speed gets down sometimes hangs

[xant3r]

Try clearing the cache partition. You should always do it after updating.

[shep]

how?

[xant3r]

Power off your phone. Hold home and volume up button while holding power button to go to recovery. Choose clear cache partition using volume buttons and press power button to select it. After it's done select reboot.

[rohit]

is this erase all my data