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Step 1: Maintenance - System Restore
(UNDUE any tinkering)
Step 2: Disable Auto APN
APN Screen remains on AUTO
IP type remains on IPV4 only
AT Command line by line
Command 1: at+qmbncfg="AutoSel",0
Command 2: at+qmbncfg="Deactivate"
Step 3: manually enter APN
Single Command: at+cgdcont=1,"IP","B2B.tmobile.com"
Step 4: check APN via apn query
Single Command: at+cgdcont?
(Don't forget the question mark)
the response should say step 3 command and OK
Maintenance - Restart System
HAPPY STREAMING!