Is GPS data?

[ryano2121]

I am going to Ireland and would like to use TomTom on my Verizon phone. Does the GPS signal work over the data line? I won't have service while I am there - will the GPS work?

[btonetbone]

Try turning off your data in the comm manager and see if it works for you. I may be mistaken, but I think aGPS uses a tiny amount of data and regular GPS doesn't.

[eigerzoom]

yep the whole concept of GPS is based on communicating directly with satellites
aGPS is with the towers

[drewcam888]

You can only use standalone gps in Ireland. So you have to be running a custom rom on a Verizon phone for this feature. agps (Vahalla) will not work in Ireland.

[ryano2121]

I am running a custom ROM. I can use the standalone GPS by just turning off the data connection, right?

[drewcam888]

No. You must change gps mode to 2 and turn off agps. Look here for my settings. Also the gps on the Titan sucks and getting a standalone outside of CDMA service sucks.
http://forum.xda-developers.com/showthread.php?t=458923

[ryano2121]

I read through the thread you sent and a few others. These are the reg changes I found:

HKEY_LOCAL_MACHINE\SOFTWARE\HTC\SUPL AGPS:EnableAGPS = 0
HKEY_LOCAL_MACHINE\SOFTWARE\HTC\SUPL AGPS:EnableGPSSmartMode = 0
HKEY_LOCAL_MACHINE\SOFTWARE\HTC\SUPL AGPS:GPSMode = 1
HKEY_LOCAL_MACHINE\SOFTWARE\HTC\SUPL AGPS:QoSAccuracy = 25
HKEY_LOCAL_MACHINE\SOFTWARE\HTC\SUPL AGPS:QosPerformance = 89
HKEY_LOCAL_MACHINE\SOFTWARE\HTC\SUPL AGPS:TimeBetweenFixes = 1000

Then in QPST, only Autonomous and GPS/AFLT Hybrid are checked.

And phone is in flight mode.

Is this right?

[drewcam888]

Yes that should be about right.