No GPS when locked to EVDO

**guitardoc64** · #1 (**permalink**) 04-28-2010, 12:37 AM

Okay, Sprint carrier question. I'm on the bleeding edge of EVDO(3G) as Sprint is finally getting it in my area, and I did the EPST edit to force EVDO(3G) and I get no GPS. So I switch it back, and deal with my battery life issues. I go to New Orleans last weekend and they are a Sprint highspeed area and in automatic mode I get both. I'm not at all new to this, but it has the ol' Doc stumped..did I miss something?

**horndoctor** · #2 (**permalink**) 04-28-2010, 01:40 AM

Wirelessly posted (HTC Diamond: Mozilla/4.0 (compatible; MSIE 6.0; Windows CE; IEMobile 7.11) Sprint MP6950SP)

Quote:

Originally Posted by guitardoc64

Okay, Sprint carrier question. I'm on the bleeding edge of EVDO(3G) as Sprint is finally getting it in my area, and I did the EPST edit to force EVDO(3G) and I get no GPS. So I switch it back, and deal with my battery life issues. I go to New Orleans last weekend and they are a Sprint highspeed area and in automatic mode I get both. I'm not at all new to this, but it has the ol' Doc stumped..did I miss something?

So you're saying you couldn't get gps to work in New Orleans either?
If not then I would re-check and make sure AGPS is enabled with at least a 32kb log file and your location is set to ON.
Download and use QuickGPS if you don't have it already.
If you have a gps radio and you are getting a decent signal it should work.

**guitardoc64** · #3 (**permalink**) 04-28-2010, 10:10 AM

It worked in NO when set back to automatic instead of HDR only. Location on.

**horndoctor** · #4 (**permalink**) 04-28-2010, 01:44 PM

Wirelessly posted (HTC Diamond: Mozilla/4.0 (compatible; MSIE 6.0; Windows CE; IEMobile 7.11) Sprint MP6950SP)

Quote:

Originally Posted by guitardoc64

It worked in NO when set back to automatic instead of HDR only. Location on.

Huh...if you set it like you had it in NO then it should work. I guess you just don't have a strong enough signal yet.

**guitardoc64** · #5 (**permalink**) 04-28-2010, 07:47 PM

Yeah, I suppose. Or I may be seeing another carrier's 3G. I tried everything I can think of, but nothing works other than leaving it set to automatic and watching my battery die. So, whatever. I'm due for an upgrade, so either the Pro 2 or EVO is next, and I'll retire tne Vogue.

**horndoctor** · #6 (**permalink**) 04-29-2010, 12:10 AM

Wirelessly posted (HTC Diamond: Mozilla/4.0 (compatible; MSIE 6.0; Windows CE; IEMobile 7.11) Sprint MP6950SP)

Quote:

Originally Posted by guitardoc64

Yeah, I suppose. Or I may be seeing another carrier's 3G. I tried everything I can think of, but nothing works other than leaving it set to automatic and watching my battery die. So, whatever. I'm due for an upgrade, so either the Pro 2 or EVO is next, and I'll retire tne Vogue.

I suppose you've already tried different radios like the 3.42.50 and changing PRLs?

whitey10tc · #7 (**permalink**) 04-29-2010, 02:38 PM

AGPS uses an EVDO signal when possible. and programs like Gmaps. will most likely require a EVDO signal.
As for your EPST setting set it to auto and in the phone setting menu change the mode of operations to hybrid. You can also check the following, your GPSone setting in QPST your IP could have changed, also check your SUPL AGPS ip in the registry.

This of course all assumes that your phone strictly uses EVDO for all data, and 1X for talk and text.

**guitardoc64** · #8 (**permalink**) 04-30-2010, 10:20 PM

Quote:

Originally Posted by horndoctor

Wirelessly posted (HTC Diamond: Mozilla/4.0 (compatible; MSIE 6.0; Windows CE; IEMobile 7.11) Sprint MP6950SP)

I suppose you've already tried different radios like the 3.42.50 and changing PRLs?

The PRL change is what started all this. A couple of weeks ago I got auto-updated by Sprint. All of a sudden, my 1X started reading EV intermittently. Mostly when ending a call. So I decided to do the edit to force EV. Data works great. Yay. GPS, not so good. I switched back to auto and everything works, but the switching from EV to 1X is killing battery. I can save some battery if I switch off the data connection after use instead of leaving it idle. As I said before I'm looking to upgrade soon to either a TP2 or EVO so it's not a real issue and I imagine that Sprint's EV tower strength will get better in the near future.

**horndoctor** · #9 (**permalink**) 04-30-2010, 10:53 PM

Also, I have QuickGPS on my diamond which seems to help to get fast locks and I recently found a version that was posted for the Vogue here:
http://forum.ppcgeeks.com/showpost.p...51&postcount=2

Might be worth a try!

**guitardoc64** · #10 (**permalink**) 05-01-2010, 07:41 PM

I'll try that. I updated the PRL to 60654 and it still doesn't GPS lock when in HDR only, but in automatic it works even better. I will have to see over the next few days as to impact on battery life...