Our default Message? (or other?) Yesterday I mentioned the APN angle here
other threads have hashtag mms.
Carriers are tending to drop MMS so you might first check they still offer the service or maybe require a “special” APN for MMS. This is common and happens for instance with Vodafone.
It is the built in message app on murena fairphone. Stopped sending images after updating to latest e/os
So it is worth following up what I said about APN as it has been known for “preset” /e/OS APN to diverge from current. If this happens for a known Carrier + Country devs can possibly patch a change. (AOSP commenced a new APN “method” ~early 2026.)
Or Message developed a fault, you might check build-feedback ??
Downloaded quik as an alternative messaging app and so problem solved