Your texts stay on “sent” but never show “delivered” or “read”
Calls go straight to voicemail every time
The phone rings once or not at all before going to voicemail
You get no reply even after multiple messages over time
Messages may appear to send normally from your phone, but the person never responds
iMessage texts may stay blue but never show delivery status
Android messages may show as sent but not delivered
You cannot see the person’s updated profile photo, status, or online activity in some apps
Other people can contact them normally, but your messages do not get through
The signs are consistent across repeated attempts, not just once