why can't I send messages from my contacts on my iphone 7

[iMore Question]

why can't I send messages from my iphone 7 and it says not dilivered

 

[Just_Me_D]

One of the following is a possibility.

1. The recipient's phone is turned off.
2. The recipient's cellular service has been disrupted.
3. The phone number you're trying to send a message to isn't associated with a mobile phone.
4. Your device isn't connected to the internet or your cellular service is spotty or nonexistent.
5. Other

 

[Ledsteplin]

Try Reset Network Settings
Reset Network Settings Settings>General>Reset>Tap Reset Network Settings. You may need to enter your wifi passcode back in afterwards.