Originally Posted by
tessmasters Same problem here, but with the AT&T locked Lumia 1020 on the StraightTalk service. Worked fine until I installed the new 8.1 update, and now no MMS texting and also not able to receive texts that were sent to me as a group or more than one person and not able to send texts to more than one person...... Please advise....
Go to Settings - Cellular / Sim - Sim setting and add this to the apn and mms:
Internet APN:
APN: tfdata
Username: blank
Password: blank
Proxy server (URL): blank
Proxy port: blank
MMS APN:
APN: tfdata
Username: blank
Password: blank
Proxy (or MMSC) address mms3.tracfone.com
Proxy port: 80
MMSC address
http://mms-tf.net