While in USA/WA, my mobile data was working fine. I crossed the border to Canada and my phone connected to Canada Rogers, but I was not getting mobile data or MMS. Voice and text were working. After calling T-Mobile several times, they "reset" their network settings to remedy, but still no fix. I had friends w/ me on T-Mobile branded phones, they had LTE / 4G on Canada Rogers. Internet browser said: ERR INTERNET DISCONNECTED.
I crossed the border from CAN to USA/WA, and my phone was still connected to Canada Rogers. I reboot my phone, and I only get T-Mobile voice and text; no data and no MMS. Called T-Mo again, and no fix.
I return home, swap SIM card from OPO to Nexus 5, and voilą! Getting LTE and MMS. Swap SIM back, and OPO will not connect to Data or MMS. So the problem does not appear to be SIM related, but OPO related. I wonder if my Nexus 5 would've worked in CAN for data/mms.
*About two weeks ago, while in USA, my mobile data stopped working, I had to get a new SIM card, which solved the problem, but I can't do this all the time, or when Int'l.
My question: How do I get my OPO to work w/ mobile data and MMS w/o getting new sim? I'd like the OPO to work in CAN and USA since I will be traveling to CAN often. Thanks.