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samsung gt-s5230?

screen is frozen and only side buttons are working
ANDY, April 2017
Turn off, battery out, pause, battery in, reboot.

If that doesn't cure it, you may have a failed phone.

You may get some mileage from :

http://www.askmefast.com/My_touch_screen_on_Samsung_GTS5230_is_frozen_how_do_I_get_it_work_again-qna1191089.html

acp, April 2017
link Click here to see other fixes for Samsung.