I was asked by my friend to help her decide on a new smartphone. I helped her buy a used in "like new" condition S3 with the Metro PCS branding. I wanted to see how well it would pair with my BlackBerry Music Gateway in my car using the NFC, and to my surprise, her S3 doesn't have an NFC antenna under the batter cover... Apparently Metro PCS sells them with generic plastic back covers without the NFC antenna. My question is, would she get NFC if she buys a S3 back cover with the antenna? Or did Metro lock it out of the software as well? Also, I heard that Androids have something with a unique code for the batteries, so that might be something else that could interfere with her getting NFC?? Any and all input will be greatly appreciated guys. Thanks.