I have two phones both with sprint. They work perfectly. Been doing so since november 2015. The big 4 work well and almost the same. Find out who has the phone you want and the best price. It varies and fluctuates. Just glad there are multiple options.Does anyone has an idea which is the best work provider's in Altanta to do Uber . I heard that sometimes some might not work properly even in some spots around the busisiest areas.