How to determine if latitude and longitude are accurate

I am currently using the Network(wifi, data plans) to get latitude and longitude for Android (and iOS) phone. The documentation states that the coordinates may not be accurate(GPS is more accurate). Therefore, how can I determine if the Lat/Long coordinates given to me are accurate? Or, if they are not, how can I determine how much off they are?

added note: not sure if that answers my question. HOw can i use these coordinates to see if it is accurate. Im not concerned with how to program it.

Check this blog post Android: Location Updates with the FusedLocationApi

He uses fused location API to parse location data and keep track if coordinates are accurate. Hope that helps.