There was a solution that I suggested in this thread that worked for others, maybe it will for you as well? https://productioncommunity.publicmobile.ca/t5/Get-Support/Re-OnePlus-11-5G-MMS-messages/m-p/1155783/highlight/true#M806354
@Zula @marshydope I've been able to get my OnePlus 11 working with MMS again by updating my APN settings, and making the APN field capital letters. Could just be luck, but I've been trying different combinations for over a week and this finally did i...
I can also confirm that I cannot send / received MMS on the OnePlus 11G. Can't say exactly when it started since I don't use MMS that often, but I noticed it a few days ago. I had updated the APN settings a while back, and it was working, at least up...