18 When Your iPhone Gets Slow, Hard Reset

There are quite a few things you can do to try and speed up your iPhone. But the absolute simplest method is to just give your device a good hard restart. Normally, we think of this as an option for a frozen or unresponsive device, but it can also fit some performance issues in a pinch.

• On pre-iPhone 7 devices, just hold the Home and Sleep/Wake simultaneously until your screen goes black.
• On iPhone 7, hold the Volume Down button and the Sleep/Wake button simultaneously for 10 seconds.
• On the iPhone X, iPhone 8, and 8 Plus this is accomplished by pressing the Volume Up button, pressing the Volume Down button, and pressing and holding the Side button.

In either case, it’ll help clean out your phone’s memory and can fix apps that have run into issues.