The “two CDMA” issue with dual standby is exaggerated. Although it is true that Verizon uses the extended 2G and 3G CDMA systems when touting their geographical coverage superiority, the fact is that 4G LTE is a GSM protocol, and two cellular plans can be supported as long as both plans are on LTE, not 1xRTT or something similarly antiquated. In the unlikely event that both cellular plans end up on this old system, the secondary cellular plan will lose its 3G data but it will still have voice and SMS coverage. Insofar as support for eSIM with Xfinity Mobile, this seems to be a simple choice that they have made to limit human support and having to pay for it. I am sure that they are aware of the problems that T-Mobile Support say that they are experiencing, and would not want to add having to support those customers to their list of problems. With my dual plan setup, I have experienced a spontaneous loss of all cellular coverage, and occasional interruptions of data streaming. It is not critical, IMHO, and you learn what’s going on and how to deal with it. Maybe Xfinity just isn’t ready to deal with it. Your primary cellular plan really should be on the physical SIM, and this adds to the glitches because if Xfinity Mobile is your secondary plan, your primary plan has to be on the eSIM.
... View more