I recently updated my Samsung Galaxy S4. Since then the phone keeps crashing every few minutes. When I restart the phone, it works fine for a few hours then again starts crashing.

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    What carrier do you have? Are you rooted? – Gryphoenix Feb 12 '15 at 14:13

install a custom recovery like philz touch, completely wipe, then flat the firmware for your phone downloaded from live.samsung.com. Did you face any call quality issues?

protected by Community Feb 22 '15 at 16:24

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