Your messages stay blue but never show Delivered or Read
iMessage texts may turn green instead of blue
Your calls go straight to voicemail after one ring or no ring
FaceTime calls fail or never connect
You cannot see the person’s contact photo or status updates in Messages if they previously shared them
Their last seen or online status disappears in apps that show it
Your texts are sent normally but never get a reply over time
You can still message them, but nothing changes on your side after sending
If you try from a different number and it goes through, your original number may be blocked