Cell phone tracking

It normally take more than one minute to acquire your current coordinates (longitude, longitude and altitude sometimes) from the satellites when you have a cold start, even in the open air. But if you have A-Gps in your cell phone, this may only take some twenty seconds, depending on your mobile internet speed. If you [...]

You have to wait a few minutes for your GPS cell phone to acquire the coordinates of your current location when you get a cold start. However, you can always speed up satellites acquisition on your cell phone by using A-GPS.
There are two options for A-GPS:
- Always download satellites data from the A-GPS server [...]

Many cell phones especially smart phones have a Gps  receiver but numerous users are not sure what A-Gps is and what the differences are between A-Gps and Gps.
A-Gps is short for assisted global positioning system. Generally speaking, when you switch your Gps on, it starts to find the orbits and clock data of the relevant [...]