Thank you for using Apple Support Communities. It's my understanding that after updating to iOS 11 you're unable to take screenshots on your iPhone. I'm happy to help.
If the issue persists, reinstall iOS with iTunes. This can resolve possible software issues. When reinstalling iOS, iTunes will completely remove your current software and install a fresh version. While iTunes will try to do this without removing data, it's a good idea to make sure you have a recent backup before trying this step. How to back up your iPhone, iPad, and iPod touch
Thank you for using Apple Support Communities. It's my understanding that after updating to iOS 11 you're unable to take screenshots on your iPhone. I'm happy to help.
If the issue persists, reinstall iOS with iTunes. This can resolve possible software issues. When reinstalling iOS, iTunes will completely remove your current software and install a fresh version. While iTunes will try to do this without removing data, it's a good idea to make sure you have a recent backup before trying this step. How to back up your iPhone, iPad, and iPod touch
This thread has been closed by the system or the community team.
You may vote for any posts you find helpful, or search the Community for additional answers.
i phone 7 screen shot not working
Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple Account.