Steps to fix the Waiting for activation error in iMessage and FaceTime

Gray Frame Corner

Check Apple’s server status page

Make sure you have an internet connection

White Frame Corner

Refresh your connections to iMessage and FaceTime

White Frame Corner
White Frame Corner

Refresh your connections to iMessage and FaceTime

Sign out of your Apple ID account

Check that your time and date are correct

Gray Frame Corner
Gray Frame Corner

Update your iPhone, iPad, or iPod

White Frame Corner
White Frame Corner

Factory reset your device

For more details check out lenses and compare at Lens Louis. 

Gray Frame Corner

Contact Apple Support

Gray Frame Corner