Originally Posted by
wco81
Does the digital compass on the 3GS work with international data roaming off?
A lot of GPS apps. require an Internet connection.
The compass should. It's just a magnet in the iPhone. The GPS might not, though--it does seem reliant on an external assistance server. I don't have a 3G S, but AFAIK, the two systems are independent.
FWIW, I do have a pretty good sense of direction (like Steve M) and am not easily disoriented. Some older subway systems, though, do get me, with their myriad of twists and turns coming up from underground...