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I purchased a subsidized AT&T iPhone 4s in October 2011 (model MC922LL/A). I just unlocked the phone through AT&T's unlock website and received an email confirmation. I have backed up and restored the phone in iTunes and received the "Congratulations, your iPhone has been unlocked" message.

My question is, can I use my unlocked iPhone 4s with any of the following carriers:

  • T-Mobile (GSM)
  • Metro PCS (GSM)
  • Verizon (CDMA)
  • Straight Talk (CDMA)

Edit: I ended up trying Metro PCS and haven't had any problems. They're using T-Mobile's signal, which works with my 4s.

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You won't be able to use it on any CDMA networks. T-Mobile is no problem. Metro PCS has a big "bring your own device" headline on its site so I'd guess it's OK as well.

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