Develop Bugs

[Q] Strange wifi/wireless problem

Hi everyone,
My g7 is having problem with wifi (and bluetooth, but I mostly use wifi). The issue is the wifi signal strength is extremely low. Only when I put the phone just next to the wifi AP, it will get a strength of 3-4 (not full) slots. In most cases if you walk away from the AP for about 5 meters, the strength will go down to almost nothing and becomes very unstable.
bluetooth? even in discoverable mode, it is not discoverable.
I think it might be a problem of some kind of antenna inside it. how could I check? i have disassembled it.
I noticed when I remove the chin of it, the phone signal will go to zero (the GSM signal) and I know there is an antenna in it. Isn't the wifi sharing antenna with the mobile network?
My radio is latest according to the forum. Trying cm7.0.3 and oxygen 2.2.1, both same issues.

hardware defect
working fine for me on both and no bug have been reported on both roms.
must be your hardware defect, sorry. still in warranty ?

[Q] Data sometimes drops altogether [Verizon LTE/3G]

Hello,
I have a Verizon edition of the Galaxy Nexus, and both my initial phone and my warranty replacement have had the same issue: specifically, they both will occasionally drop all data, be it 3G, 4G, or EDGE. Occasionally they will even drop voice signal altogether. (I've also had the second phone reboot randomly - not often, but it did when I tried to use Wifi Tether, for instance).
This does not happen everywhere, but since my job takes me all over town it happens a reasonable amount, (and notably, not with the Sprint EVO 4G work phone I have). I am based in Sacramento, CA.
My phone is rooted. I have heard that the phone may have issues with switching towers? It is able to reclaim a signal reasonably quickly once it drops, (10-15 seconds) although sometimes I have to do nonsense like switch in and out of airplane mode to force it to grab a 4G signal.
I'm coming up on my return and refund period within a day or so and would like to know if I should dump this phone for an HTC Rezound, or if this is something I can fix by installing the 4.0.3 leaked software.
Thanks in advance for your help.

I know that there is a newer base band you could try flashing, and 4.03 might also fix some of your issues, but be aware that you are pretty much beta testing new technology.
I've never had voice drop on my GNex, but I will occasionally have a drop of data. I believe in my case it is because I am on the cusp of 4g coverage at home, so sometimes it will (barely) connect to the 4g tower, and then disconnect and go back on 3g. When I'm at work and I have solid 4g coverage this issue doesn't present itself.
To remedy the situation temporarily I just switch to CDMA when I'm at home, and if I am in an area where there is 4g and I want faster connection speed I'll re-enable LTE. I know this sounds like a ridiculous solution, but I love my GN too much to return it...again, we are early adopters of new technology.
Only 0.6% of android users are even on ICS - all of this technology is very new.
I believe as Verizon rolls out 4g to more areas that currently only have 3g coverage we will see less and less drops in data (greyed out bars). Hopefully Google/Verizon/Samsung will improve on the radios, etc and make things more smooth for us.
As far as wifi tether goes, I know they JUST got it working on Galaxy Nexus recently, and it is still in beta phase, so I wouldn't count on it being bug free...I had a reboot once when using the beta 10 version, so I don't think what you are experiencing is all that uncommon.

I had a similar issue but only when I was in 4G coverage. I would randomly completely lose signal for about 30 seconds and then it would come back. Usually happened quite often..about 4-5 times an hour. I ended up taking it back for a new one and a new SIM card and haven't had that issue since.
Sent from my Galaxy Nexus using Tapatalk

[Q] LTE connectivity issues on LTE Galaxy Nexus. Flashing ICS 4.0.4 did not solve.

I bought a new GNex last week and immediately ran into bad connectivity issues when preferred network mode is set to LTE/CDMA. Basically no signal all (3G or 4G), even though I live in downtown Boston where there should be 4G. When I switch my preferred network mode from LTE/CDMA to CDMA, the 3G network works fine with no connectivity issues.
On the phone, Verizon told me that a software patch in May will fix the issue. A staffer at the Verizon store told me that I could already find the patch online and that it would solve the problem... I assumed he was talking about 4.0.4. I flashed 4.0.4 yesterday fully expecting it to solve my LTE connectivity problems but ..... no luck. I still get no signal using the LTE/CDMA setting. I can't even make or receive calls unless I switch back to CDMA.
Do I have a hardware issue? Are other people having the same problem? Should I trust Verizon and hope that the 4.0.5 OTA update fixes the problem? Is there anything I can do about it now?

I am in the same boat as you. Just got a replacement from Verizon but it had a horrible purple tint to the screen so its going back. Didn't even get to see if its better at 4g. I think its a hardware problem as I've read that some people were able to get a replacement phone that actually works.
Sent from my Galaxy Nexus using XDA

My problem is similar. I can get 4G and use it sometimes but after a short time of data usage all my data is cut off until I reboot the phone. No calls, no nothing. I logged a ticket last night and will be calling back today for an exchange.
edit:
I stopped into the VZW store after calling customer care and getting everything all setup. They swapped out my gnex for a new one and so far my experience has been positive. I'm seeing improved signal everywhere and last night the phone didn't drop connectivity once or even get warm. The old phone would get hot to the touch in the upper left of the screen, the new one stayed cool throughout 30 app downloads with 2 bars 4g. Here's to hoping my problem is solved.

I'm getting a similar issue with connectivity dropping ice had this phone for three weeks and the signal drops terribly. At my house because I live on a mountain by a Penn state campus I know there isn't much in the way of signal because of the distance from the towers without interference. But even with being in other areas with 4g I still run into the signal dropping...I thought it was just me so it's good too know I'm not the only one having issues
Sent from my Galaxy Nexus using xda premium

T-Mobile Wifi Calling Disconnecting

Recently with the latest oxygen os 4.x.x, I have been facing many disconnections with vowifi/wifi calling. This is really frustrating as I need it in certain places like in school buildings where I don't get reception. I don't remember if I got this behavior with the openbeta builds but I am curious if anyone else if having similar issues. Just for clarification, I am running a T-Mobile sim.

Nope.

I don't use wifi calling as I can't keep a stable wifi connection at all on this phone. Wifi is horrible on it. My wife's g4 plus is rock solid on the same Google fiber router. My op3 loses connection about every 3-4 mins and reconnects.

N920I - Weak 4G. Can no longer make or recieve calls. Possibly a local 3G tower was turned off.

My Galaxy Note 5 SM-N920I purchased December of 2015 can no longer make or receieve calls. My provider is TracFone via the Bring Your Own Phone program. I use their SIM card and it has worked all this time. Until recently the phones features have stopped working. I think they have been disabling the 3G in my area, as everyone is converting to 4G now.
Note 5 is supposed to support 4G but it's definitely been having issues. Text and internet still works. however texts are sometimes delayed on occasion, not always, usually it's fine. Data speed just now was tested at 10 mbps down, 3 mbps up. Signal bars are consistently low, regardless of physical location; inside, outside, other side of town, SIM status shows signal always between -108dBm and -118dBm. This is likely why I cannot make or receive calls, but the question is, why is this happening?
Like I said, I suspect they are shutting down 3G in this area, so the best theory I've been able to come up with is this: perhaps 4G has always sucked on this phone but I never noticed because it would fall back to the good 3G connection. Now that 3G is gone in this area, all I have to use is 4G which is a shoddy connection.
Further research has found in the early days of this phone there were numerous reports of weak/no signal. See these threads:
Fed Up With Terrible Reception
Hey all, I'm kind of venting here and at the same time hoping for some sort of direction because I'm absolutely fed up with my S6. I upgraded roughly a month and a half ago from an S4. My phone usage was below normal for the first week or two as I was busy with a variety of projects. As my...
forums.androidcentral.com
No signal/network on my note 5
Hi everyone, so I just got this note 5 N920P last two weeks but I noticed its OS was lollipop...waited for updates for 7.0 but nothing so I went ahead and downloaded Odin with latest firmware from samobile and did it my self, now here the problems start to show first of all this hands free...
forums.androidcentral.com
One theory was that the 4G antenna they used in the Note 5 / S6 was of poor design. Causing weak signal.
Things I have tried and did not work:
-Contacted TracFone. They confirmed the device is supported and provisioned correctly. They recommended a new SIM card.
-Replaced the SIM card with a brand new one
-Factory reset the device. It's running the stock Android 7.0 Nougat which was the last up to date version available.
-Tinkered with various service menus including *#2263# and *#0011#. Messing about with the LTE band settings didn't change the signal strength ever. Regardless of the LTE band, it stays in that -108 to -118 range, too weak for calling.
What can be done to fix this? Possible ideas:
-Internal antenna replacement, but this seems either expensive to have someone do, or extremely difficult to do oneself. Would it even make a difference? Has anyone tried this?
-Software. Could the issue have been introduced during one of the software updates? Planned obsolescence perhaps? Could we revert to an earlier firmware to potentially resolve this? has anyone tried this?
-Firmware. Could we upgrade the firmware to a later, unsupported version safely? Perhaps the issue was fixd in later Android versions but has not been adressed in older devices that are no longer updated.
I'm the kind of person who likes to use my things until they absolutely die. This Note 5 has been perfectly fine until recently. There is nothing wrong with it. It's still modern, fast, and has a great camera. I would HATE to have to replace a phone for such a stupid reason. Not only is money tight, but it's such a waste when this thing is still perfect apart from this weak 4G signal.
Has anyone else had this issue? Have you resolved it? Any help appreciated. Thank you.

Try a network reset.
Clear sim toolkit data.
Clear system cache.
The access point profile may need updating or maybe the sim?
Contact AT&T advanced tech support.