Quote Originally Posted by marx View Post
In my opinion you need to use only GPS option on OS level.
GSM and Wi-Fi triangulation are usable only at cold-start but after that these options only interfere with GPS. Results are GPS jumps (from satellites to wi-fi or gsm).
While this is true, the "jump" will still exists because GPS accuracy can't differentiate single lane differences. I see this all the time with US highway and side road.