Calls go straight to voicemail after one ring or no rings
Text messages stay undelivered or never show a delivered status
You no longer see their profile photo or status updates in messaging apps
Your calls may be sent to a busy signal or disconnected tone
Messages may appear sent but never get a response
You cannot reach them through normal phone calls or texts, but other numbers can
Their social media or messaging activity may still be visible, but not through your number
Repeated attempts from your number consistently fail while other contacts can reach them