Hello all,

I recently ordered a Samsung Galaxy S4 online from cell2get.com. When it arrived, I noticed I'd bought the wrong one and it was CDMA unlocked, and as I have AT&T, I thought this would be a problem. When I first put my SIM card in, it said that the SIM was from an unknown source, which I expeected, but as soon as I exited the setup I could use everything just fine, I can make calls, connect to wifi, and send texts--everything a GSM unlocked phone would do.

However, mobile data seems to not work at all. It's definitely on, and I've tried everything from restarting my phone, to turning airplane mode on and off, to turning mobile data itself on and off. Nothing works, and I can only use the internet when I'm connected to wifi. Does anyone know how to fix this problem, and does it have something to do with using a Verizon phone while having AT&T service?

 

The only APN offered is a Verizon one, and it's grayed out and can't be selected.