[Samsung Galaxy Nexus] narutoreplicate:
I've tried this for two days and I'm out of ideas. My Galaxy Nexus (Jelly Bean 4.1.1) lost all bars of reception overnight. Please lend me your expert aid!

Some context: My phone was running perfectly fine for a week after flashing official Takju 4.0.4 using the GN Toolbox, then doing an OTA update to 4.1.1. All of a sudden, all reception is lost with bursts of 1-2 bars of reception for 10 seconds every 5 minutes. The remainder of the 4 minutes and 50 seconds, I'm stuck with zero bars (Note: WiFi works fine). Note that before this, I have had this phone for a couple months with it working flawlessly as well, before flashing Takju (when it was on Yakjuux).

I have tried turning on/off airplane mode, restarting phone, disabling mobile ap, using only 2G networks, changing APN to a numerous different settings, praying, removing and replacing the SIM card, holding the phone in different ways/not holding it at all, moving to different locations around the city (in case it's a region thing), toggling Google Location Services, toggling GPS and NFC, and just waiting a day to hope it fixes itself or that it's a server-side problem.

I am in Vancouver, BC on Rogers with a data plan.

I have not tried flashing a new radio. This is because I flashed to the Takju build purely so I can get OTA updates; if I root (again) and install CWM, then flash a new radio, it is to my understanding that I will no longer get OTA updates. Note, however, that my phone had good reception for around a week of time... doesn't that mean the radio is fine the way it is?

Please help me out... What other things should I try, XDA?

Regards,

Eddy.

===Edit===

In fear of becoming one with the Wisdom of the Ancients (ala xkcd's /979/), I wanted to let everyone know:

I Fixed it without opening up the phone at all:

After troubleshooting that this was indeed not a software issue (it was working for a week!), I approached it as a hardware issue. I looked all over the interwebs to find teardowns of the Galaxy Nexus to find where the antenna is. ifixit has a teardown and is a very useful reference, as are other videos you can find. The antenna itself is a simple "button down" antenna, similar to the Galaxy S2, and this video shows this best. Notice that all it is is like a button clip on.

Youtube's /watch?v=65pvAINg2ME&t=24m34s <XDA won't let me link video>

My antenna must have come loose over time on my Galaxy Nexus.

Instead of opening then entire device up, all I did was figure out precisely where the ends of the antenna are and gave my nexus a tight squeeze in those locations. Clearly, do not sqeeze so hard that your screen breaks... just a tight, safe squeeze. Where are they? I came prepared!

A quick squeeze here, in these two locations and we're back at 3-5 solid bars with no dropped calls!!!

=== End Edit ===

== Old context ==

PS: My APN settings are as follows:

Name: Rogers

APN: internet.com

Username: wapuser1

Pass: wap

MCC: 302 (default)

MNC: 720 (default)

PSS: more context: I use my phone a lot with WiFi, using Skype to video chat (e.g. an hour a day)...

PSSS: I have done the exact procedure to get the Jelly Bean update to my brother's and another friend of mine's Galaxy Nexuses (Nexii?) recently; they have not had such problem.