For those that did not find the GPS function after download, make sure you are actually using the 1.5.1 version. For me, I installed Google Map using their google service, and it is a 1.4.1 version. THe interesting thing is when I go to gmm to download the 1.5.1 version of Google Map, I can download it and it actually create a NEW icon. I had been clicking my "old" one many times and I am puzzled about why I did not see the GPS button. Then I figure out that they installed a NEW version and does not replace the old one, which is probably being bundled by google service.