Hello. Im looking for a magnetic phone mount/holder for my car but i have some concerns about using the magnets on an s3 (or any phone). Can the use of magnets damage the phone in any way? Also, I have read that it can interfere with the gps signal. Any one had any issue or know if it would make the gps malfunction? What about nfc? I want to use a nfc sticker for BT and other settings next to the place where i would put the phone and the phone mount but im not sure if it would interfere with that, or even bluetooth signal. Is there any magnetic phone mount you would recommend? I saw these on ebay : link 1 ; link 2 ; link 3 and this one from tetrax, which i wanted to avoid because they use a sphere magnet on the case that is to noticeable I saw ones from tetrax but the ma gnet they use on the phone is kinda like a sphere and i didn't want that on the phone. I will be using a case with the phone so i was thinking maybe something that i could place in the case that would be hidden and still worked. Thank you for your time!