Your messages stay blue but never show a delivered or read status
Your calls go straight to voicemail or ring once before ending
FaceTime calls do not connect
You no longer see the person’s online activity or status in shared apps
Their profile photo or contact updates stop appearing
Messages sent through iMessage do not change status after a long time
You can still send texts, but they never seem to reach them
A sudden change from normal replies to no response may indicate blocking
If the same contact can be reached from another number, your number may be blocked