I would like to buy a gs5, lightly used from amazon. I do not care if it's GSM or CDMA. There are a ton of models and some review indicate that some models only get 4g LTE overseas or vice versa. I plan to use the phone in Tampa, FL, USA....
can anyone recommend what model i should buy... if i buy an at&t used model, do i need to worry about it still being on contract or will it just "work"? and if i buy straight from amazon warehouse, can I assume the ESN will be clean?