I currently don’t have service so I use my iCloud to text and call. I tried to send a message and it said not delivered, I went to settings to see what the problem is and the sign in button was greyed out. I tried signing in multiple times and it wouldn’t work. Why can’t i sign in?
iPhone 7 Plus, iOS 13
Although you may not have received an error message, see If you get an error when trying to activate iMessage or FaceTime https://support.apple.com/en-us/HT201422 Maybe this document will be enough to solve your problem.
Although you may not have received an error message, see If you get an error when trying to activate iMessage or FaceTime https://support.apple.com/en-us/HT201422 Maybe this document will be enough to solve your problem.
Have you checked Settings/Screen Time for any restrictions?
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.
My iMessage is signed out and it won’t let me sign back it
