Hi everyone. I'm trying to use my Galaxy Note 4 in Armenia, but am having issues with the sim. Before leaving the US, I called sprint and they unlocked my phone for international use. I was told that now that it's unlocked, I can use it with any sim card from any carrier abroad. Now, I bought a sim card and my phone is not working with it. I took it to a Samsung store here in Armenia and was told that although the phone is unlocked, it will not work here. Does anyone know why that is, and what can be done? I will be here for 2 months and it's really difficult not having a phone especially in a foreign country.