I currently have an S3 and will be upgrading in two months. The one fault I dislike the most on the S3 is the faulty GPS. It will fail to lock on my location. I can fix it by opening up the back and tightening the screws. It will then work for anywhere from a few days to a few months and then it needs to be redone. Of course it fails when I am in an area I don't know and don't have a screwdriver. This is a hardware fault and I was wondering if any of you S5 owners are having this problem, or has Samsung finally fixed it.