Old message marked as 'Read' without a timestamp on iPhone

A message showing “Read” with no timestamp usually means:

• The message was read when read receipts were ON
• The timestamp was lost because they later disabled read receipts, switched devices, restored their phone, or their iCloud metadata changed
• It does not indicate blocking
• The fact that later messages say Delivered means you’re not blocked

This is simply an iMessage metadata quirk — not a sign of something wrong.