Hi i had a few questions in regards to the 2014 mazda 3 GS. I cant get my memory card slot working for some strange reason. I tried it in 2 different computers and it seems to be working fine. I havent tried to change the format yet, i have a feeling it may be in NTFS, its a 16GB SDHC card. my seccond issue is the wifi.... what exactily is it used for? i managed to connect it to my wireless hotspot from my phone. Once connected it does absolutly nothing. any help on the 2 matters would be greatly appreciated. Thanks in advance!