Verizon phone refuses to use CDMA

I bought a Galaxy s7 to replace my broken s7 edge. It's (supposedly) a refurbished, unlocked Verizon s7 with the model number of SM-G930V, which I believe is supposed to support both CDMA and GSM. It has an IMEI number but I can't find a MEID number. When I put the sim card from my edge into it, it says the sim card is not a Verizon card. When I try to activate the phone on Ting, it says it's compatible with GSM networks and won't let me enter a CDMA card, which is what I have. Frustratingly, even though GSM has better coverage in my area, when I tried to use that network on my edge almost a year ago, it never would function correctly and I never had any service, despite being within an area that had service, and friends of mine who also use Ting reported the same issues. So my question is, what's the deal with the phone I bought, and will I have to return it? It SHOULD use CDMA, but i can't seem to make that work...

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9 comments
  • Hey Patrick,

    It sounds like the Verizon model is not able to activate on the Sprint network, a device must be compatible and also have been white-listed by Sprint in order to activate.

    If you're not interested in moving over to GSM I would have to suggest returning the phone and looking for a Sprint compatible model (G930P) 

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  • Thanks, that was extremely helpful in leading me to the information I needed, which is that S7s aren't compatible with the Sprint network. It didn't even occur to me to check if specific models were compatible or not, or that a S7 Edge would be different than an S7. I guess we will try the GSM network one more time and see what happens after that.

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  • I'll reply on your open help request to help get you a GSM SIM, hopefully the signal has improved over time.

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  • We got the GSM card in, activated it, and set the APN settings on the Galaxy S7. We have double checked that we are, in fact, in an area with good coverage. But we don't seem to be able to connect to the mobile data. If we stand just so, in one very specific place outside and chant the ritual words, it will sometimes connect to the T-Mobile network for a second or two, but it won't roam over to AT&T. We haven't been able to call the number to complete the activation because of this. Data is turned on in our account setting, and on the phone. Is there sometime else we can try to fix this, or do we just not have coverage, despite the map saying we should?

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  • Coverage maps are optimistic at best and your connection to the towers can be affected by something as simple as a few trees. This blog post from a company that sells boosters to fix said problem agrees, but the point is still valid.

    As to roaming, that's actually expected. Roaming on GSM is nothing like roaming on CDMA. On CDMA, your phone jumps to Verizon whenever and wherever the Sprint network can't reach you. On GSM, you only roam on AT&T in specific coverage areas where T-Mobile has determined they don't have sufficient coverage. Add to that the fact that we only offer talk/text roaming on either network and you might be in the unfortunate position of fringe coverage on all networks.

    If you haven't completed activation, that could be one reason why it's not maintaining a connection. Any chance you could head into town with a known-good coverage area, then head back to see if that makes a difference in coverage?

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  • So we went into the next town over where there is fantastic GSM coverage and finished the activation process. At home and in our town the coverage is still poor to nonexistent. Is there anything else we can do? 

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  • Try enabling Wi-Fi calling from your account and on your device as that will help provide a better signal where you can connect to Wi-Fi.

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  • So we decided to get a new phone as the coverage was just too spotty where we spend 95% of our time, and it accepted the CDMA card and is in the porting process, but it's been about 18 or so hours and we are still waiting for it to port. It only took about an hour to port over to the GSM card, and it took about 3-4 hours when switched from GSM to CDMA the first time. What gives? We'd really need to get this phone working.

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  • Hi Patrick,

     I see that Christian reached out to you by email to help out with the issue and he has a new SIM coming your way. When it arrives if you need a hand with porting the number on to it just let us know. We would be more than happy to help out so that we can get the phone up and running properly. 

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