Comments on: Potential fix for iPhone 3G No Service problem

By: Ken

Ken — Mon, 30 Aug 2010 22:15:57 +0000

I have the problem with “no service” trying to use the phone as a goPhone. It worked fine in my 2g, so i bought a 3g so I could use GPS. Weird enough, it only works when a program is trying to connect to the att data network and the GPS is on. I will get no service unless I use Navigon GPS or Google Maps. Navigon works better.

By: Srinath

Srinath — Thu, 26 Aug 2010 05:03:37 +0000

@gafoor, instead of trying a custom firmware, try getting the official 3.1.2 firmware from Apple. Then flash it with iTunes, and use redsn0w over it. I really can’t figure out what else you are doing wrong. Maybe you can also try using SIM cards from a different provider.

Firmware links here – http://theiphonewiki.com/wiki/index.php?title=Firmware

All the best!

By: gafoor

gafoor — Wed, 25 Aug 2010 17:46:54 +0000

I did try using ultrasn0w through cydia to unlock it. This is the link i used to get the custom 3.1.2 firmware http://www.iphoneheat.com/2009/10/download-iphone-os-3-1-2-custom-firmware-ipsw-files-for-iphone-3gs-3g-2g/

Followed this link to unlock the phone using ultrasn0w http://www.iphoneheat.com/2009/07/how-to-unlock-iphone-3gs-os-30-using-ultrasn0w/

By: Srinath

Srinath — Wed, 25 Aug 2010 16:16:30 +0000

Have you tried ultrasn0w instead? It works for all basebands now and is tried and tested. Don’t install it over blackra1n though. Flash the firmware again, and then try ultrasn0w instead. It should work if done right.

By: gafoor

gafoor — Wed, 25 Aug 2010 15:54:41 +0000

Hey Srinath thanks for replying back to me. Well i forgot to mention a little detail of the problem. What happens is after i flashed it two times i get the network signals for a little bit. Then it says searching and gives NO service. If i am not wrong, if there was a problem with flashing i would not have got the signals recognized for even a couple of moments. I am wondering if the antenna connection has gotten loose or something. Just to give you an idea of how i flashed it. I put the phone in recovery mode, used the latest iTunes, restored the phone with custom as well as the original firmware. Then i used Bkara1n(snow) to unlock it. I get the Tmobile network showing up and then it drops to 1 bar. Then finally says no service after searching.