Mexperience varies with network carrier, location and phone used. At home, TMO takes forever at JFK but in say Jacksonville Florida, as soon as turning it on....this is true whether I use BB, iPhone, SEw810i.

Internationally, primarily in Asia, signal is much quicker, again regardless of phone (i've yet to try iPhone but will next trip out). The only problem I encountered was with older Treo 600 - often had to do a soft re-set.