How to reset (reboot) iPhone?

There is no straightforward way to reset an iPhone, so you'll have to turn it off and then turn it on.

Turn off the iPhone

Push and hold the sleep button at the top of the iPhone for a few seconds until you see a red slider. Move the slider, and the device will turn off.

Turn on the iPhone

Push and hold the sleep button until you see the Apple logo. Wait for the iPhone to completely boot up, and you are done.

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