No 3G or EDGE signal after upgrading to iOS 6

When you are in SETTINGS - CELLULAR you can see three options you can turn OFF

- Cellular Data

- Enable 3G

- Data Roaming

Turn these OFF

Now scroll down to CELLULAR DATA NETWORK and click it

Here you see your Cellular Data, MMS and Internet Tethering settings..

Scroll down.. you see now RESET SETTINGS

Click it and CONFIRM

Now you back up (one level back) to SETTINGS - CELLULAR

You see:

- Cellular Data - OFF

- Enable 3G - OFF

- Data Roaming - OFF

Turn these ON now.

Done!

did you follow the instructions regarding iTunes restore of iPhone?

Tried that but it didn't do the trick for me 😟

when you did.. did you make sure you did NOT restore the iCloud backup but set it up as a new iPhone first?

just to confirm.. itunes downloads the image (takes about 10 mins depending you LAN speed) and then restores the iPhone (takes about 4-5 minutes)

trying the restore now - what i tried before and didn't work was switching off and on the cellular data settings.

btw, i had upgraded the phone over wifi and not using iTunes. It shouldn't make a difference I think but it's worth mentioning.

It does.. over WiFi it does not download a new image.. it relies on the one on the phone and that is obviously corrupted and therefore it wont have an effect.. had the same.

great! that gives me hope that the restore might fix it 🙂

.. and? worked?

nope 😠

Here is another thing you can try..

It involves downgrading to 5.1.1 first.. for that you need to download the iOS 5.1.1 IPSW

If you have an iPhone 4S, then get this: http://appldnld.apple.com/iOS5.1.1/041-4346.20120427.1RuDG/iPhone4,1_5.1.1_9B206 _Restore.ipsw

If you have an iPhone 4 (GSM) then use this: http://appldnld.apple.com/iOS5.1.1/041-4293.20120427.3DRyb/iPhone3,1_5.1.1_9B206 _Restore.ipsw

Then follow these instructions:

1. Turn the device off, connect it to the computer via USB, and launch iTunes
2. Place the iPhone into DFU MODE: with the device off, hold down the Power and Home buttons together for 10 seconds then release the power button, continue holding Home button until iTunes notifies you of a device in recovery mode being detected. The devices screen should stay black as if turned off.
3. Restore to iOS 5.1.1 IPSW by Option-Clicking (Option Key for Mac's, I believe ALT key for PC) the “Restore” button. You should get a pop up to choose which IPSW to load.

When you done that.. check if you have 3G again.. when you do.. (yea!) then repeat my instructions for iOS6 and let me know if that works for you.

---- addition ---

here are the 5.x images for all the iOS Devices

• iPad 1
• iPad 2 Wi-Fi
• iPad 2 GSM (ATT)
• iPad 2 CDMA (Verizon)
• iPad 2,4 (New iPad 2)
• iPad 3 Wi-Fi
• iPad 3 GSM
• iPad 3 CDMA
• iPhone 3GS
• iPhone 4 GSM
• iPhone 4 CDMA
• iPhone 4S
• iPod touch 3rd gen
• iPod touch 4th gen

Thanks! I'll try that as soon as I get off the phone ;-)

interim update: just installed 5.1.1 and the installation process prompted to update the baseband. So iOS 6 must have done something to the baseband firmware...

I think iOS royally fubarred that one up yes :-)

they really did!

latest news:

installed 5.1.1 over iTunes, tested 3G internet which worked fine

upgraded to the latest and not so greatest iOS 6 over iTunes: no internet on 3G

now downing it back to 5.1.1 until Apple get their act done...

Thanks for your help though b'admin!