You can put pretty much any picture you want on your iPhone's lock screen. And if you've updated to iOS 16, you can even add a few extras, like widgets.

There are a few ways to change your lock screen on an iPhone. But if you're running iOS 16, the easiest way is to go directly through the lock screen.

While you're looking at your iPhone's lock screen, tap and hold your finger anywhere. After a moment, the lock screen will zoom out and a few new options will appear.

Select Customize to edit your current lock screen. You can tap the photos icon in the bottom-left to change the lock screen picture, swipe left or right to add a filter, and tap the boxes at the top to add widgets. If you tap the current time, you can also change its font and color. Tap Done in the top-right to save your design.

Select the plus sign in the corner to open the Add New Wallpaper window. This lets you pick from a selection of premade lockscreens, which include real-time views of the Earth, emoji patterns, color gradients, colorful swirling lines, and more. You can also choose from your own photos like normal — just tap Photos or People at the top of the screen.

You can also create a Photo Shuffle. In a Photo Shuffle, you'll pick a series of photos that your iPhone will randomly select to use as your lock screen, changing every so often. You can make the photo change every day, every hour, or even every time you unlock your iPhone.

If you're using an iPhone XR or newer, some lock screen photos can also have Depth Effects. This gives your photos a faux-3D effect by making the photo's subject block your view of the clock.

Once you've made multiple lock screens, you can switch between them whenever you want by tapping and holding your finger on the lock screen again. When the current lock screen zooms out, just swipe to switch to another one.

If you're still using iOS 15 or older, then you can't change your lock screen by tapping and holding your current one. You also can't use the new premade options.

Instead, open your iPhone's Photos app and find the picture you want to put on your lock screen. It can be a picture that you took yourself, or one you saved from another app.

Once the picture is open, tap the share icon in the bottom-left corner. It's the icon that looks like a box with an arrow coming out of it.

Scroll down and tap Use as Wallpaper. Your iPhone will show you a preview of what the new lock screen looks like — when you like how it looks, tap Done in the top-right, or Set at the bottom of the screen.

If it asks whether you want to make the picture your lock screen or home screen, choose the lock screen option.