I've asked this question on one of the forums and I know many who don't even have a GPS enabled phone (just for knowledge) may have this question in their mind. That is quiet a relevant question as not everyone has access to a GPS receiver. Its the same like once I used to think "How to use Bluetooth?" :). Of course not interested with the intricacy of the technology but just want to know what it does and what to do to make it work.
Other questions like "How much will I be charged if I use it?" , "Do I have to register at some place before using it?", "Is the operator involved in anyway?" were also on my mind.
I'll just tell how I used GPS on N95.
I found two GPS related applications on the phone "GPS data" and "Maps". There may be other application available but not searched as yet. As N95 has the GPS receiver and since this hardware can be accessed with Symbian's API's applications can be developed and the GPS data can be used as one wishes.
One does not get charged to use GPS. Your operator is no way involved when using GPS . If your application uses the operator services like sending sms , using gprs etc.. then you will be charged according to your plan.
"GPS data" application does not need any operator services (it does ask for the access point and transfers something for the first time but never saw it after that). When you start the application it tries connecting to satellites to get your exact location. You should be connected to least 3 satellites. It may take some time to get locked to the satellites. When the app starts a pop up comes saying "Searching for satellites" followed shortly by "Calculating GPS data". Then there's nothing until you are locked, which can take quiet some time. So mean while you can try the "Satellite status" option, which will show the strength of the satellites. The pic along side shows only one satellite as I am indoor right now. So when using GPS remember
- Like all satellite navigation devices, the Nokia N95 may take several minutes to gather the location from the GPS satellites the first time it is used.
- Make sure the Nokia N95 has a clear line of sight to the sky, and that the slider is open - the receiver is located under the keypad.
On the other hand "Maps" uses the receiver as well as GPRS. It downloads map of your current location, thats where you get charged.
See its easy.
Check out more about N95 and GPS here.
Note: Using GPS does take a lot of battery :(