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No GPS fix on iPhone 3G after iOS4 upgrade

GPS working fine before upgrade. Now neither google maps nor tomtom can find a sattelite. I appears that the OS and the GPS receiver can't communicate. Did restore w/ backup several times to no avail. Then did hard reset - no success either. According to forums on other Navigation app sites many people are having this problem. Anyone else find a solution other than the hard reset (which appears to work for some), resetting restrictions, and turning off 3G? Only solution that I see now is to downgrade to OS3.1.3.

3G, iOS 4, GPS

Posted on Jun 30, 2010 3:34 AM

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52 replies

Jul 19, 2010 9:12 AM in response to The.Todd

I agree. Right after upgrading to iOS4, Navigon was not able to get a good enough GPS fix to enable navigation. I tried the full restore, but to no avail. GPS accuracy just as bad as before. I've used Google Maps and it seems to work (although I'm not sure of the GPS accuracy), but I'd like to get the navigation software I paid money for working again.

Message was edited by: rasselin

Jul 19, 2010 10:51 AM in response to cjovejo

I had been using my old 3GS for Geocaching without any issues until I recently had to switch to a spare 32gb 3GS recently. The GPS is horribly off and some of the "fixes" I've found online have helped a bit, but it is still unusable where accuracy is needed.

Just upgraded to IOS 4.0.1 this morning and no improvement. 😟

Jul 20, 2010 3:01 PM in response to rasselin

rasselin wrote:
I agree. Right after upgrading to iOS4, Navigon was not able to get a good enough GPS fix to enable navigation...

Ouch, you're right. It was working fine before the iOS 4 upgrade, but now it's close to a mile off in identifying my location.

Between this, the lost wi-fi, and the battery life... I really wish I hadn't "upgraded."

Jul 21, 2010 7:06 PM in response to cjovejo

Just realized I have the same issue. At first I thought it was the heavy cloud cover yesterday, but today was very clear and same problem. Very frustrating when traveling and thought there wasn't any reason to carry around maps anymore. It's definitely in issue between the gps and 3G. If I turned off the 3G it was more accurate but of course to slow to use as a navi system.

Jul 25, 2010 11:47 AM in response to cjovejo

Same problem here 😟 I noticed it first because as soon as I updated 4square stopped being able to locate where I was with any accuracy (stuff at the top of the list was pretty far away, and I always have to manually search to find the name of the place where I actually am)

A trip with Navigon yesterday confirmed that it's the GPS lock - it seems to figure out where I am in about the same amount of time as before, but as soon as I start going, it's frozen at 0mph and endlessly recalculating, periodically interjecting with a very wrong location and urgently saying to do a U-turn, and then momentarily figuring things out before losing me again. It used to do tolerably well before the upgrade (maybe not as well as my $40 dedicated GPS unit, but relatively OK), but it's unusable now. 😟

Jul 27, 2010 11:26 PM in response to cjovejo

Quick update for everyone. I got fed up with the no gps issue and ended up going to the apple store. The genius gave me a replacement phone and gps seemed to work fine on the replacement, but the touchscreen had issues. I then returned that replacement and got a second replacement which is having the same GPS inaccuracy as my original phone. This is obviously a software bug with ios4 that apple has yet to address. Frankly I am tired of apples lack of quality control in their recent products and will be looking for an alternative as soon as my contract with AT&T expires. What a shame.

No GPS fix on iPhone 3G after iOS4 upgrade

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