How to fix T-Mobile Samsung Vibrant (Galaxy S) GPS

I haven’t even had the T-Mobile Samsung Vibrant – which is T-Mobile’s variant of the Galaxy S – for two days, and one of the issues I’ve seen with it so far is that the GPS is just horrible. The Vibrant takes forever to lock onto a GPS signal and when it does, it sometimes shows my location incorrectly. After doing a little snooping around at XDA Developers, I found out I wasn’t the only one, and the forum provided a fix that works great!

There are directions on how to do this on XDA, but the instructions are a little vague and could use some clarification. The guide below should make the process fool-proof. If your Samsung Galaxy S is having GPS accuracy issues, follow the guide below to try to fix the problem.

Fix your T-Mobile Vibrant GPS issues:

  1. Disable “Use Wireless Networks”
    1. Navigate to Settings > Location & Security > uncheck the box next to “Use Wireless Networks”
  2. Go to the phone and dial *#*#1472365#*#*
    1. This step throws you into LBSTestMode menu
  3. In the LBSTestMode menu change “Operation Mode” to MS Based
  4. In the LBSTestMode menu, find “SUPL/CP Settings” and change the SERVER & PORT to supl.google.com and port 7276 (DO NOT use www. in front of supl)
  5. REBOOT
  6. Enable “Use Wireless Networks”
    • Navigate to Settings > Location & Security > check the box next to “Use Wireless Networks”

Should you want to revert back to your original GPS settings, you’ll need to re-enter you factory specs:

GalaxySLBsTestMode T Mobile Samsung Vibrant (Galaxy S) GPS issues fix [Tutorial]

Original settings:
Operation Mode: Standalone
SERVER: www.spirent-lcs.com
PORT: 7275

After doing this, I experienced an immediate improvement in the time it took to get a GPS signal lock. Hope this helps any of you who were experiencing problems. Samsung is said to be aware of the problem, and are planning a fix in the next update for the Vibrant. It’s not clear if the above fix works on all Galaxy S variants, but we can confirm that it works on the AT&T Captivate.

Source: http://www.intomobile.com/2010/07/21/t-mobile-samsung-vibrant-galaxy-s-gps-issues-fix-tutorial/

For my own problem I couldn't dial the above number from my phone so I uesed GPS Aids app instead.

Well it didn't really work for me. My GPS doesn't work at all.

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