IssueTracker

I can attest that Yakju 4.1.2 update on stock Galaxy Nexus broke radio, bluetooth and wifi. The phone enters airplane mode on its own. The radio loses all telco signal (only recover after a 10 second airplane mode). Bluetooth pretends to connect but the headset is unusable. Wiifi that the same issue as bluetooth.

All in all, the phone connectivity is in a really poor state. Most people could not reach me today and I had to keep checking the phone the whole day to see if the radio/wifi was still working which it mostly wasn't.

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Same on nexus S, wired tethering

Vert bad bug...

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Same issue. Cannot tether.  Wifi will connect and assign an IP.  No throughput.
Version 4.1.2 Build JZO54K

Update, Bluetooth tether works. Wifi does not.

same thing here. Want to get back to previous version :(

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I have the same issue. 4.1.2 broke wifi tethering

I reverted back to 4.1.1, out of curiosity, what is everyone's frequency? i'm using   850/1900 HSPA. My theory is that 4.1.2 breaks tethering in some way.

Same to me. Cannot tether.  Wifi/usb will connect and assign an IP.  No throughput.

Same here on the nexus S.

I was having the same problem but I spoke to my network's help line, they made a setting change on my line and all is working again now.

Signal Strength suddenly become bad ..along with Some issue with USB Port as its not deducting while connecting to PC

@#13: could you please ask them what they changed so others can try?

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Have the same problem in my Galaxy Nexus, tethering does not work. I updated last weekend to Jelly Bean 4.1.2. Everything was fine with ICS.

I have the same problem on my Galaxy Nexus 4.1.2. Previously with 4.1.1 everything was fine.

Ref. my comment #13 and request for further info #15, I have spoken to my network operator and the fix they employed was to send out a service text that updated the APN settings. I'd perhaps suggest checking yours and making sure 4.1.2 hasn't messed with them.

In my case I am with EE in the UK and it was their OrangeBroadband APN settings that needed repairing.

@#19: thanks for looking into this and providing the update. I think however that your issue is different, since my APN settings were fine (I did a reset right now though just to confirm), and having bad APN settings would mean that the phone cannot access the Internet either, which, in my case, works flawlessly (I can browse, use online apps and stream online radios, the only thing I cannot do is tether)

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@#20 Those were exactly my symptoms too - full internet access on my Nexus S but no data pass through for tethered devices (iPad or TF700 or my wife's Nexus S). The fault coincided with my update to 4.1.2 and my network migrating from Orange UK to EE. I hoped it was the network update that was the cause (I didn't want to believe that it was 4.1.2 as I knew that if it was I'd be without tethering for a long time) so I went to them first. Orange/EE don't block tethering, thankfully - they just use their systems to spot it and charge 1GBP/day each day I use it.

Same here on my Nexus S.
:(

Same on my galaxy nexus, 4.1.1 worked, 4.1.2 no usb or wifi tethering. Contacted my carrier for the correct apn, they told me it never should have worked, they didn't have tethering enabled on my plan, they enabled it and re pushed apn(no change, I had the correct one) now wifi is working but usb still broken. I didn't try bluetooth before but it is working now.

Your carrier should not have any affect in tethering on stock android (unless google has changed something without telling us)

Chester, agreed, I'm only presenting data, not conclusions. He seemed surprised that I've been tethering for two years without it enabled, (first on my one now on my galaxy) however, they didn't even know that I could change my APN manually.

Here may be an explanation :
http://www.androidpolice.com/2012/10/09/heres-whats-new-in-android-4-1-2-at-the-low-level-developer-commit-logs/


project device/sample/
bcd21a3 Change apns-full-conf.xml
a5c1fcb Fixup tethering APNs
de5e5b4 [maguro/crespo][sample] change apns-full-conf.xml

@#19 Would you mind posting the APN settings that fixed your phone? I'm not sure if I'm suffering the same problem as you, or this bug with the 4.1.2 update. The Orange -> EE switch happened at the same time.

I'm afraid that we are gonna have to wait to new version release (Key Lime Pie 4.2) to fix it.

<Huge slap on the forehead> Just found out, that the upgrade turned off the Bluetooth tethering under Settings -> More ... -> Tethering & portable hotspot. After turning it on and doing a "Reset to default" under Settings -> More ... -> Mobile networks -> Access Point Names, it works.

Sorry zoltan (Comment 30) Can you be more specific on how you solve it so I can try it. I don´t understand your instructions. I´m a little novel in this stuff.

Sure, here it is step by step:
1. Go to Settings
2. Choose "More..."
3. Choose "Tethering & portable hotspot"
4. Enable "Bluetooth tethering"

Try it, if it still doesn't work:
(first two steps are the same)
3. Choose "Mobile networks"
4. Choose "Access Point Names"
5. Click on the 3 dots below each other to see the menu and choose "Reset to default"

Should work by now.

I've just tested tethering with a colleague of mine.
Same galaxy nexus with 4.1.2 but 2 different operators, his phone works with tethering my phone don't.
I exchanged the sims and my phone started working in tethering. So I think it's an operator issue but as far as 4.1.1 my nexus worked also with my operator.

I think that the APN settings in 4.1.2 are incompatible with some networks or has minor differences from the previously working 4.1 APN settings which stop data pass through working correctly. The extent of the break is network dependant

Thank you zoltan.
If I do that: "Reset to default", my connection data account dissapears. And I have to create a new APN and put all over again the parameters. Is that correct? Now I don't have way to check it out, but I hope so this fix it