By Chris Harrington, 11 September, 2014 Forum Hardware and Accessories good morning everyone, I am planning on pre-ordering the iPhone 6 + on no contract. Will I need to get a new sim card for my AT&T plan, or will the sim card out of the 5S work? Thanks so much!!! Options Log in or register to post comments Comments sim card question No you're provider usually activates the phone for you when you call them so no the iPhone already has a sim card in the phone. sim card question Hi, As far as I know, the only way to get the phone unlocked is to choose the T-Mobile option. I just don't know how I would get it on to AT&T's network. unlocked phones Hello. Usually the Sim card is installed when you buy the phone, but in the case of an unlocked phone, it depends on who you go with. If your going with T-Mobile for example, the Sim card will be installed for you. If you go with an unlocked phone that isn't tied to a carrier, You'll have to buy the Sim card separately unlocked phones Here's my situation. I do not have an upgrade with AT&T for another year. So, when I buy the phone unlocked, how do I get an AT&T sim card? I'm using an iPhone 5S currently, so will my simcard in the 5S work with the 6+? Thanks! sim card Hi, As far as I know, the iPhone 6 and 6 plus still uses the nano sim so your current sim card should work. Just put it in when you get your phone, wait a couple of minutes and it should start working.