To turn on an Android phone without Power button, put the phone in fastbooot mode using Volume Up+Volume Down and connect the phone to a computer. Download and install the universal ADB drivers on ...

To restart your iPhone without the power button, you can shut down via settings, ask Siri for help, or let your battery die. Then, recharge or turn back on.

An unsung addition to the new Control Center is a power button in the top-right corner. Press that button, and the standard power slider will appear on screen so you can turn off your iPhone.

If your Windows laptop won't turn on, but the Power Light is on, there may be some hardware fault on your laptop. Check out these fixes and see which one helps you.

A broken power button means your phone needs to be repaired, but here's how to power it on in the meantime.

Quick Answer: To restart your iPhone without the power button, go to Settings > General > Shut Down, then slide to power off. You can also ask Siri to restart your iPhone without the button.