If your iPhone 17 Pro screen is stuck in one orientation and won't rotate when you turn it, check whether Portrait Orientation Lock is on. Some apps don't support rotation, so test an app that works in landscape mode before trying other fixes.
Start by checking Portrait Orientation Lock. Swipe down from the top-right corner of your screen to open Control Center and look for the Portrait Orientation Lock button. Make sure it's off, close Control Center, then turn your iPhone sideways. If the screen still won't rotate, try Calculator or Safari.
Check Rotation Lock in Control Center
Portrait Orientation Lock can keep your iPhone 17 Pro's screen in portrait mode when you turn it sideways. You can find this button in Control Center, which you access by swiping down from the top-right corner of the screen.
Look for the icon that looks like a circular arrow with a lock in the center. Make sure Portrait Orientation Lock is off, then close Control Center before turning your phone sideways. If you don't see the button, check the additional controls available in Control Center.
Verify Rotation After Closing Control Center
After checking Portrait Orientation Lock, close Control Center by tapping the screen or swiping up from the bottom, then open an app that supports landscape mode, such as Calculator or Safari. Turn your iPhone sideways while that app is open and check whether its screen rotates.
If it rotates there, the app you were using may not support landscape mode. If it still won't rotate with Portrait Orientation Lock off, move on to the restart and orientation checks below.
Force Restart Your iPhone 17 Pro
If the settings look correct but rotation still isn't working, try restarting your iPhone. If it is unresponsive, use the force-restart sequence below. This doesn't delete any data, it just gives the system a fresh start.
On the iPhone 17 Pro, you force restart by pressing and quickly releasing the Volume Up button, then quickly pressing and releasing the Volume Down button. Immediately after that, press and hold the Side button. Keep holding it until you see the Apple logo appear, then let go. Wait for your phone to reboot completely before testing rotation again.
Test Rotation in Different Apps
Sometimes the issue isn't with your phone, but with a specific app. Not all apps support landscape mode. Open Calculator or Safari, which support landscape mode, and turn your phone sideways to see whether the problem happens there too.
If rotation works in Calculator or Safari but fails in another app, that app may not support landscape mode. If it normally rotates, try closing and reopening it. You can also check for an update in the App Store: tap the My Account button, then App Updates, and tap Update next to the app.
Update to the Latest iOS Version
Software problems can affect screen rotation. Make sure your iPhone 17 Pro is running the latest version of iOS. Back up your phone before updating, and connect it to power and Wi-Fi.
Go to Settings > General > Software Update. Your phone will check for any available updates. If one is listed, tap "Download and Install." It's a good idea to plug your phone into power using your USB-C cable or a MagSafe charger during this process, as some updates won't install without sufficient battery.
Check for Physical Obstructions or Cases
This might sound simple, but it's worth checking. Try removing your case and see if the screen rotates normally without it. Test in an app that supports landscape mode, with Portrait Orientation Lock off, so you can compare the same check with and without the case.
Also, ensure the screen itself is clean and dry. Moisture or a significant amount of dirt on the screen can confuse the touch sensors. Give your iPhone 17 Pro's display a wipe with a soft, lint-free cloth and try again.
Test the Gyroscope and Accelerometer
If you've tried the rotation checks and the screen still won't turn, use the level in the Measure app to check whether your iPhone detects orientation changes. Open Measure, tap Level, then hold your phone against an object such as a picture frame.
Rotate the object and your phone until the screen turns green, indicating that the object is level. You can tap the screen to capture a slope and tap again to reset the level. If the level is stuck, restart your iPhone, then test rotation again in Calculator or Safari.
Reset All Settings
This is a more thorough step if nothing else has worked. Reset All Settings removes or returns many system settings on your iPhone 17 Pro to their defaults. This includes network settings, privacy permissions, the keyboard dictionary, and display and brightness settings. It also removes Apple Pay cards and resets Face ID, Bluetooth pairings, and Apple Watch pairings.
It won't delete any of your personal data like photos, messages, or apps. To do this, go to Settings > General > Transfer or Reset iPhone. Tap "Reset" and then choose "Reset All Settings." You'll need to enter your passcode. Afterward, you'll need to rejoin Wi-Fi networks, re-pair Bluetooth devices and your Apple Watch, and set up Face ID again; you may also need to restore preferences such as wallpaper.
