I think I have may have confused the issue in my prior GL post. I want to dissuade people from thinking they have GPS in their phone in a functioning manner, let alone in the way boaters think of GPS, either as a plotting device or transmitting location like an EPIRB. There are cell phones with a GPS chipset built in for the day that true E911 functionality arises. I will attach Verizon's explanation of this at the end. In the big cities, Verizon has introduced a handset with something closer to what we on this list would consider GPS, to enable a street navigation system (that actually works very nicely) they are selling . HP makes a PDA phone ($$$) for Cingular that also has a usable built in GPS receiver. By and large, beyond that, the GPS in a phone market really belongs to Nextel, initially aimed at the commercial dispatch, service and delivery markets. However by this time next year, this technology will become very prevlent, GPS chipsets are going for <10 bucks over in Asia on an OEM basis. There are a variety of Bluetooth wireless GPS receivers that will work on appropriate phones that have nav software (3rd party) on them, such as Maptech's Outdoor Navigator. Jeff Sigal of this list is the expert on that concept. Here is Verizon's verbiage about GPS in everyday phones: The GPS (Global Positioning System) locator chip, which is present in all wireless phones we currently sell, except the BlackBerry 6750, is used solely for tracking purposes by Emergency 911 Services and does not function like a typical GPS device. Verizon Wireless cannot guarantee that you will be systematically located after dialing 911 from your wireless phone. In many places Public Safety still relies on the caller's descriptions to locate those in need. Enhancements to the Public Safety 911 system will make it possible for Public Safety to read your callback number and to estimate your location. However, given the many variables with wireless radio service, no design will be perfect. There are three different phases that the FCC requires for this service. We have listed them below for your convenience: First: The FCC requires wireless carriers to provide Enhanced 911 call identification capability when requested by each of the approximately 6,000 state/local PSAPs nationwide. Second: The FCC's Phase I Enhanced 911 rules require wireless carriers to automatically provide PSAP (Public Safety Answering Points) with the telephone number of the 911 caller and the location of the cell site used to originate the 911 call. Third: Phase II Enhanced 911 rules requires wireless carriers to automatically provide the telephone number of the 911 caller and far more precise location information, within 50 to 100 meters in most cases. Providing more information than you probably wanted to know, George