I don't often attempt to use the inbuilt GPS on either my n810 or N95, as they offer extremely poor performance compared to even an inexpensive bluetooth GPS like my Holux M1000. With multi-minute time to first fix, poor positional accuracy, inability to keep more than a handful of satellites locked in even generous environments and you can see why the built in GPS units on the N95 and N810 aren't worth using except in an extreme pinch.