I sometimes cannot send photos in the build in message app. Sometimes it works, sometimes it doesnt. I cant find a pattern. All I get is message under the photo: “Failure during send. Tap to try again” (my translation from Danish). I tried to tap again, but no change.
Message app > 3 bar top left menu > Settings > Autocompress MMS attachments.
For many carriers Automatic is a good choice. If not working perhaps experiment working up from quite a lot of compression. Your carrier may have information online of how they deal with attachments but photos are regularly downsized (a lot) from the Camera output.
Thank you for your suggestion.
Reducing to less than 1mb allows me to send today. However, the 1mb setting has worked previously. I tested changing my default app to textra. Through this 1mb and 2mb photos a being send.
I have this issue too. I’ve noticed that if I reboot and try to send the photo again right after it usually works. It’s a pain to reboot my phone every time I send a photo though.