Can’t download anything
Why can’t I download anything on the App Store?
iPhone 7 Plus
You have to be able to connect to the App Store.
See the Apple Support article(s) below.
App Store, iTunes Store, or other Apple services - If you can't connect
Some other things you can try. Do you have access to another WiFi network where you can try? That has worked for several people.
Try a restart.
Restart your iPhone, iPad, or iPod touch
Try a forced restart.
If necessary
Do a backup and try a factory reset. Then restore from your backup.
Backup - Restore your device from an iCloud or iTunes backup.