I received my phone and went ahead and got a new sim while i was waiting for the phone to come in the mail. I finally had time to sit down today to activate the phone and I've had nothing but problems. First it wouldn't complete the network registration so i chatted with sprint twice and they said everything was fine on their end and to wait a while and turn the phone back on. I waited several hours because i had errands to run. I came home and it still wouldn't activate. So i chatted again and finally it completed the network registration and i received a text instantly. I can get text and use data just no voice calls. So i thought everything was fine. I then proceed to make a test call and nothing happens every time i try to dial out it says that "You are roaming and you need to press one to buy a calling pin" or something like that. Ive been on chat and on technical support over the phone and they still can't resolve the issue. I've never had this happen before with an unlocked phone. My nexus 6 activated just fine and i have been using an iPhone 6s plus up until today with no issues. They can't figure it out and had to issue me a ticket to try to resolve the issue later. Any help would be greatly appreciated.