I believe not everyone will go to read the whole Samsung Galaxy S4 User Manual. Here is a little trick that can help you save some time since I saw several users faced Galaxy S4 frozen and unresponsive issue. Normally, we take out battery and put it back on to let phone reboot. Well, you don’t have to do so because it is troublesome to remove back cover. Furthermore, most of us will have a case on Galaxy S4. Therefore, Samsung has a solution for this kind of issue.

How to force restart Samsung Galaxy S4?
Press and hold the Power button for more than 7 seconds. Galaxy S4 will reboot automatically then. That’s it. If this does not solve frozen and unresponsive issue, you might need to factory reset Galaxy S4

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