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switch back and forth between at&t and xfinity sim?

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switch back and forth between at&t and xfinity sim?

I am planning to try xfinity mobile with my at&t phone (unlocked by at&t) - which according to the byod section on the website, should work. My question is, once I get the phone working on xfinity mobile, will I be able to put my at&t sim back on and use it. Basically be able to switch back and forth while I try it out and decide what network I like?

Contributor

Re: switch back and forth between at&t and xfinity sim?

 If you bought the phone from AT&T  (and it’s an iPhone 7 or 8) even after it’s unlocked it probably won’t work on Verizon or Xfinity mobile .  You need a Verizon or Apple Sim free version that has the QUALCOMM modem rather than the Intel modem.

 If the phone works on Xfinity network you could switch back-and-forth but you will probably have to use two different phone numbers.  Once you port the number from AT&T that SIM will be dead.

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