This prompt is here to make sure everyone receives messages effectively on Remind! We hope everyone opts to use Remind on his or her phone, so we encourage you to add numbers to those who do not yet have their number on Remind.
It looks like this:
The number added will show up in the devices section of your notification preferences tab in account settings. Please reject the number if it is not yours!
The number is pending until you accept or reject it and does not receive messages until action is taken.