Then check the Send & Receive option and make sure your phone number is selected in both sections. The Messages app will also display a red exclamation mark if you try to send a message to a ...

An iPhone feature called Tapback lets users choose from a selection of reactions — a heart (love), thumbs up (like), thumbs down (dislike), "haha" (laugh), exclamation (emphasized), or question ...

Exclamation mark with circle around it Carriers or wireless services from different countries sometimes operate on different frequency bands. When a device under CE authority has this icon (known ...