A:AnswerWhose service does this company use? If you buy an unlocked phone, you can use anyone's service. If you buy an AT&T or T-Mobile phone, you have to use a GSM carrier. If you buy a Verizon or Sprint phone, you have to use a CDMA carrier. Hope that helps.
A:AnswerYes all you would need to do is take the SIM card from your old phone and put it in this one or they can activate it under your plan to replace your current device
A:Answerit would have to depend on if you want o pay over time or pay for the phone outright. if you pay over time the service provider that you choose may give you a discounted price and let you make monthly payments till it is paid for. if you already have service then they could set it up on a monthly payment but, a lot of times they want to change your plan so, be careful. then there is the option of you buying the phone outright and not having the monthly phone payment (if going this way i recommend an unlocked phone) that way if you already have a plan the you can just bring your own phone (byop) and it should not change your plan depending on the plan. So i guess it would all have to depend on your situation and choices or preferences.
