SIM not valid
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When I insert the SIM card, it says that the SIM card is not valid.  I am currently using an iPhone5 from Sprint.

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  • I just switched over to the new GSM network on Ting.  I am getting a SIM card not valid message on my phone.  Anyone else have this issue?  I'm not able to dial out or check my voicemail.  I'm using an iPhone5 from Sprint.

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  • The last part of that message is the important bit. In order to use a GSM SIM in that iPhone, it must be unlocked. You'll need to call Sprint tech support and request a Domestic SIM Unlock (DSU). The ability to do that just rolled out Feb 19, and reports are that not all reps are up to speed, so it may require a lot of patience and repeated calls on your part to make it happen.

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  • ...and I forgot that Sprint won't unlock the iPhone 5, only the currently sold newer models. Sorry about that.

    Essentially the answer is: you're stuck. A Sprint iPhone 5 will only ever work on Sprint.

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  • Day two not having a phone to receive & make calls. I'm still waiting for Ting to port my number back to old SIM card.

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  • Correction, Sprint iPhone5 will only work on CDMA.

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  • Oh, I was too strict in saying "Sprint" without clarifying I meant the network and not the company, but "CDMA" is too broad.

    The iPhone requires a SIM to activate cellular, and because of the locked activation policy applied to Sprint-channel models it will only ever accept Sprint-based SIMs. That rules out other CDMA networks like Verizon or US Cellular; it will only ever work on Sprint or Sprint-based MVNOs like Ting-CDMA.

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  • Hi Danny,

    As you found out, devices on the Sprint network (other than the Nexus 5 and Nexus 6 which ship unlocked) are not able to be unlocked to work on a GSM network. As Trevor mentioned, going forward new Sprint devices may be able to be unlocked for domestic use. More information should be available in the near future. Stay tuned!

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  • Here is Sprint's unlocking policy. Apparently, some newer phones may be unlocked for domestic use too. http://www.sprint.com/legal/unlocking_policy.html

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  • I have also just switched to a Ting SIM card and am getting a not valid message on my phone.  I'm not able to dial out or check my voicemail.  I'm using an iPhone5 from Sprint.

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  • Art, contact the help desk to switch your iPhone5 back to CDMA until Ting is able to figure it out.

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  • Sprint will not unlock an iPhone 5 for domestic SIM use.

    See their policy at http://www.sprint.com/legal/unlocking_policy.html

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  • FWIW - I was just able to get Sprint to grant my Sprint iPhone 5s a Domestic SIM Unlock (DSU) for use with a GSM SIM card for Ting. They gave me zero hassles. It just took a while to get to an operator b/c they require your Sprint account # for a lot of the menus.

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