For the first time since I owned it(about 6 months), my 13 keeps changing screen to horizontal from vertical-especially in Messages. 1. How to fix 2. why did this happen? Thanks!
iPhone 13, iOS 17
If the Screen Rotation lock is set to OFF, then SOME apps will detect the orientation of your iPhone and rotate automatically. The Messages app has that capability and so does the Photos app etc.
You can set the Screen Rotation lock to ON, so that the apps do not rotate with the orientation of the iPhone. Please read below about this feature:
Lock or unlock the screen orientation
You can lock the screen orientation so that it doesn’t change when you rotate iPhone.
Open Control Center, then tap 
If the button is highlighted in White, then it is engaged and Screen Rotation Lock is set to ON.
Axel F.
If the Screen Rotation lock is set to OFF, then SOME apps will detect the orientation of your iPhone and rotate automatically. The Messages app has that capability and so does the Photos app etc.
You can set the Screen Rotation lock to ON, so that the apps do not rotate with the orientation of the iPhone. Please read below about this feature:
Lock or unlock the screen orientation
You can lock the screen orientation so that it doesn’t change when you rotate iPhone.
Open Control Center, then tap If the button is highlighted in White, then it is engaged and Screen Rotation Lock is set to ON.
Axel F.
This can’t happen on every app because some apps do not have the ability to rotate the screen according to the orientation of the iPhone. Which iPhone do you have? Which iOS version is installed on it? Have your read my initial response above your post?
Axel F.
My screen is continually changing from vertical to horizontal no matter what I’m viewing. How can I stop this?
how to stop iPhone 13 from rotating to horizontal in Messenger
