Having a non-working power button is normal as it can get damaged or broken. There are many ways to Restart Android Phone Without Power Button. The best way is to fix your phone's power button from a mechanic. If you don't want to do so or cannot get it fixed, the easiest way is to use apps available on the Play Store. Here are the best two apps to use for a faulty power button- · Power Button To Volume Button · Gravity Screen