Virgin Mobile Iphone 5 A1429
Will Virgin Mobile unlock the Iphone 5 A1429 I bought from them, and if so, will it work on another network? From what I can find, it probably won't work on Sprint or Verizon (CDMA) but maybe it will work on T-Mobile (GSM). How can I find out for sure before asking to have it unlocked? I found on the T-Mobile website that if it was unlocked and (1) supports 1700 MHZ and 2100 MHZ, and (2) has the right sized nano SIM card slot (.48" x .35"), that it may work. I think both of those are the case but am not absolutely sure. I'd really like to know for sure what network(s) I could switch to before asking to have the phone unlocked. My Virgin Mobile call reception has been awful, particularly at home, since I first bought the phone a year and a half ago. You can't beat the monthly fee of $35, but dropped calls for a year and half means I'm about at the end of my rope. Thanks in advance for any help you can provide.
iPhone 5, iOS 8.3, A1429