Trouble Shooting GPS

[MrTooPhone]

I have a XT1540, rooted, stock 6.0 ROM. I am searching for advise on troubleshooting the poor performance of the GPS. Is there a way to determine if it is software or hardware related? Recently my GPS has been acting sporadically. Today I am getting a fix. Yesterday I did not. Last week in another location I never had a fix better than 30 meters since only 3 or 4 satellites were used in the solution. I don’t know if this is a software or hardware issue. I don’t know if this makes a difference, but I recently changed carriers from ConcumerCellular (AT&T SIM) to Mint which is a T-Mobile MVNO. I did have to open the phone a few times to change SIM cards, so is it possible the GPS antenna was damaged? I do have GPS Status and Toolbox, installed and have rest AGPS.. Maybe I was not patient enough for the update. I saw the XDA video on How to Make Your GPS Lock Faster. I have not tried changing my gps.conf file yet. The replacement file looks far different than the current file. Any suggestions or recommendations to restore my G3’s GPS reliability is appreciated.

 

[MrTooPhone]

Update and bump

So I restored an older ROM to a time I believe the GPS was working. The GPS performance did not improve. GPS status will show connection of 10/20, but no solution. And the few times I get a solution, the error is in the 100s of meters. Are there any recommendations before I trash this phone?