If you are having FaceTime and iMessage activation issues (waiting for activation and activation unsuccessful problems), you may want to try the following solution:
FaceTime waiting for activation problem fix
Tap Settings > FaceTime > Your Apple ID > Change Location to where your phone number is registered and select the region you are in, then tap Save.
iMessage waiting for activation error fix
Tap Settings > Messages > Send & Receive > Your Apple ID > Change Location to where your phone number is registered and select the region you are in, then tap Save.
After these changes, reset your device (by pressing and holding the Sleep/Wake (on/off) button and the Home button together until the Apple logo appears). Then your device will reboot. After that, check FaceTime and iMessage to see if your issue is fixed.
If you are still having this waiting for activation or unsuccessful activation issues, please read our previous articles: