What a lock screen is and why you'd change it
Your lock screen is the image or pattern you see when you first turn on your device or wake it from sleep — before you enter your password or use your fingerprint. Changing it is one of the fastest ways to personalize your device, but it also serves a security purpose: a lock screen that only you recognize can help you spot if someone else has been using your device.
The steps differ depending on whether you use Windows, Mac, iPhone, or Android. Each operating system stores lock screen settings in a different place, and some let you add widgets or notifications to your lock screen while others keep it straightforward. This guide walks through each platform so you can find the exact steps for the device you're holding.
Key Takeaways
- On Windows 11, go to Settings > Personalization > Lock screen and choose from built-in images or upload your own photo.
- On Mac, open System Settings > Lock Screen and select an image, then set how long before the lock screen appears.
- On iPhone, open Settings > Lock Screen, tap the preview at the top, and choose a photo from your library or use a built-in wallpaper.
- On Android, the steps vary by manufacturer, but usually involve Settings > Display > Lock screen or Wallpaper, then selecting an image.
- You can use the same image across all your devices, or choose different ones — the choice is yours and does not affect security.
Changing your lock screen on Windows 11
Open the Settings app by pressing the Windows key and typing "Settings," then click the Settings icon. In the left sidebar, click Personalization, then click Lock screen. You'll see a preview of your current lock screen at the top.
Under "Personalize your lock screen," you have three options. Click Windows spotlight to let Windows rotate through curated images automatically. Click Picture to choose a single image, then click the plus icon to browse your computer and select a photo. Click Slideshow to cycle through multiple images from a folder you choose.
If you want to use a photo from your computer, make sure it's saved somewhere you can find it — your Pictures folder is the easiest place. Once you select an image, Windows shows you a preview when ready. You can also toggle on "Get fun facts, tips, and more on your lock screen" if you want Windows to display information when you lock your device.
Changing your lock screen on Mac
Click the Apple menu in the top-left corner and select System Settings. In the sidebar, click Lock Screen. You'll see your current lock screen image in the preview area.
Click the image preview to open the wallpaper picker. Choose from the built-in collections — Dynamic, Still, or Solid Color — or click Photos to use an image from your photo library. Once you select an image, it appears when ready on your lock screen.
Below the image preview, you can set how long your Mac waits before the lock screen appears. Click the dropdown next to "Start after" and choose a time between 1 minute and 1 hour, or select "Never" if you want to lock your Mac manually. This setting is separate from your screensaver and controls when your Mac requires your password again.
Changing your lock screen on iPhone
Open the Settings app and tap Lock Screen. At the top of the screen, you'll see a preview of your current lock screen. Tap this preview to edit it.
You now have two choices. Tap Photo Library to select a photo from your phone, or tap one of the built-in wallpaper collections like Weather, Astronomy, or Emoji. If you choose Photo Library, browse to the photo you want and tap it. iPhone shows you how the photo will look on your lock screen — if it's too dark or too light, you can adjust the brightness by swiping up or down.
After you select your image, tap Add in the top-right corner. You can now customize what information appears on your lock screen — the time, date, and widgets. Tap Customize to add or remove these elements. When you're done, tap Set as Lock Screen at the bottom.
Changing your lock screen on Android
The exact steps depend on your phone's manufacturer — Samsung, Google Pixel, OnePlus, and others each organize settings slightly differently. Open the Settings app and look for Display or Wallpaper. If you don't see either, tap the search icon at the top and type "lock screen."
Once you find the lock screen or wallpaper settings, tap Lock screen wallpaper or Wallpaper. You'll see options to choose from your photo library, built-in wallpapers, or a gallery of images provided by your phone maker. Select the image you want, and it appears on your lock screen when ready.
Some Android phones let you set different images for your lock screen and home screen. If you see separate options for "Lock screen" and "Home screen," you can customize each one independently. After you select an image, check the preview to make sure it looks the way you want.
Using the same image across multiple devices
If you want the same lock screen image on your phone, tablet, and computer, save the photo to cloud storage like Google Drive, OneDrive, or iCloud. read it to each device, then follow the steps above to set it as your lock screen.
On Apple devices, you can use iCloud Photos to sync your lock screen across your iPhone, iPad, and Mac automatically. On Android and Windows devices, you'll need to manually read the image to each device. This takes only a few minutes and ensures your lock screen looks consistent wherever you go.
Troubleshooting common lock screen problems
If your image appears blurry or stretched on your lock screen, the photo's dimensions may not match your device's screen. Try cropping the image to a square before uploading it, or use a photo that's already in landscape orientation. Most devices show a preview before you confirm, so you can see how it will look.
If you can't find the lock screen settings, search for "lock screen" or "wallpaper" in your device's Settings search bar. This works on Windows, Mac, iPhone, and Android. If the search doesn't find it, try looking under Display, Personalization, or Appearance instead.
If you've set a lock screen image but it's not showing up, restart your device. Sometimes the change doesn't take effect until you restart. If the problem persists, try selecting a different image to confirm the setting is working, then go back to your preferred image.
Frequently Asked Questions
Can I use a video as my lock screen instead of a photo?
On iPhone, you can use a live wallpaper that moves slightly, but not a full video. On Android, some phones support animated wallpapers through third-party apps, but this drains your battery faster. Windows and Mac do not support video lock screens. A still photo is the most reliable choice across all devices.
Does changing my lock screen affect my security?
No. Your lock screen image is purely visual and does not change how your password or fingerprint works. The security of your device depends on your password strength and whether you have two-factor authentication turned on, not on what image you display.
What happens if I delete the photo I used for my lock screen?
On most devices, the lock screen image is saved separately, so deleting the original photo from your library does not remove it from your lock screen. However, if you delete the photo and then try to change your lock screen again, you won't be able to select that image. Keep important photos in a backup folder if you plan to use them for your lock screen.
Can I set a different lock screen for different times of day?
Windows and Mac do not have built-in scheduling for lock screens. iPhone allows you to create multiple lock screens and switch between them manually, but not automatically on a schedule. If you want your lock screen to change automatically, you would need to use a third-party app, though this may affect battery life.
Is there a recommended image size for lock screens?
Each device has different screen dimensions, so there's no single "best" size. A photo that's at least 1080 pixels wide works well on most modern phones and computers. If your image is smaller, it may appear blurry or stretched. Most devices show you a preview before you confirm, so you can see how it will look before saving it.