T-MobileUS
fast.t-mobile.com
proxy not set
port not set
user not set
password not set
server not setMMSC http://mms.msg.eng.t-mobile.com/mms/wapencMMS proxy not setMMS port not setMCC310MNC260Auth type not setAPNprotocolIPv6APN type default,supl,is,mms,xcap
APN roaming protocolIPv4
Basically the same as the T-Mobile site except they have MMS protocol as WAP 2.0 and I don’t seem to have that setting.
I have not had issues with t-mobile mms, even when i have no cell signal and am on WIFI calling.
What APN settings do you have?
T-Mobile US fast.t-mobile.com proxy not set port not set user not set password not set server not set MMSC http://mms.msg.eng.t-mobile.com/mms/wapenc MMS proxy not set MMS port not set MCC 310 MNC 260 Auth type not set APN protocol IPv6 APN type default,supl,is,mms,xcap APN roaming protocol IPv4
Basically the same as the T-Mobile site except they have MMS protocol as WAP 2.0 and I don’t seem to have that setting.
https://www.t-mobile.com/support/devices/not-sold-by-t-mobile/byod-t-mobile-data-and-apn-settings#subhead2
Edit: changed the last statement as MMS protocol is not in my APN settings