A:AnswerThe answer is yes according to the Geek Squad @ BestBuy, I am looking for a wifi extender myself & asked that question in person to the Geek Squad....
A:AnswerYou should be able to just get a new sim from att. It uses a micro sim not a nano. I used the sim it came with to replace the sim on one of my lines.
A:AnswerYou can use it for other carriers as long as they also use att network. I use mine with another company but they use att SIM cards for their Network. Straight talk uses Verizon and wouldn't work. Although they do make various versions so they might have a Verizon nighthawk version.
