Calls go straight to voicemail every time
You hear fewer or no rings before voicemail
Your call goes through but you never hear a tone change or call progress
Your text messages show only one checkmark and never update to two
Your SMS messages fail to deliver (delivery notifications or “not delivered”)
Your calls/texts are marked as “delivered” on your end but the person never responds (inconsistent with normal behavior)
You can no longer see their status updates or last seen (if you previously could)
Their profile picture/updates stop changing (if you previously saw changes)
You can’t call or message them from other numbers/contacts (suggests they blocked you rather than a network issue)
You see the block indicators only for that specific number/contact and not for others
Your calls/texts fail only when using that contact/number but work normally with other people
You receive no reply over an extended period despite normal past communication
Contact disappears from shared group chats or you can’t see their messages there (platform-dependent)