MMS works with wifi, does not work on 4G

I have the complete opposite issue. I couldn’t get MMS, tried to contact my french provider, they are full IPV6 for some stuff, but IPV4 for others. Finally, from an old old post, I’m able to send and receive MMS only when data mobile through 4G is on (impossible to do it with Wi-Fi).
(Sony Xperia XA2, Verla, Bouygues Telecom)

This seems to be a real mess. Yesterday I where able to receive MMS again by fiddling with WiFi on/off restarting network etc. but it takes like forever to download a picture. Are there any logs that could help nail this issue?

This is really annoying! Last week have been totally useless regarding mms. I have not been able to send or receive at all but one received. Been playing with all the usual dual/Ip stuff for both mms and data as well as with and without WiFi. The one that went through where when I passed a random WiFi where I did not have access but made a “fake” attempt to log in.
Are there any logs that I could try to find to be able to help with this really annoying issue?

Jolla doe not give a Rip about mms. just look at the standard mms setup and then look at the sailfishsailfish page… they know it does not work and they dont care that it does not work.

Again I am pretty sure the folks at jolla do not even using their own os daily. There isis no wway.

i just switched to a new carriercarrier redpocket that uses ATT or T-Mobile or VeriVerizVerizon (phone did that) and MMS dont work.

pure rubbish man… all these years and its still crap . Getting really tiredtired oofof this os. its 2022 its been 7 years and this os still has the same issue. Time to move on I think.

AnywAnywsAnywsy(phone did that) has anyone got MMS to work here in the US with ATT. thanks…

my settings