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[HELP] Unstable 3G / 2G

I hope you guys can help me out with a problem. Sorry about the long post ahead, I'm just trying to give as most information as possible.
Introduction: I recently installed the latest releases to see how jellybean was coming along on the Desire S. I flashed PACman and then CM10. I liked them a lot, but I usually prefer to wait until a final release, so I reverted my backup of CM7.2. One week later I notice my internet connection is very unstable, I don't know if it's my carrier's fault, or the upgrade messed with something and the backup didn't restore, and reflashing CM10 changes nothing. I didn't notice any problems right away after testing the other roms, but like I said, everything happened around the same time frame.
Problem: First of all, if I enable 3G, it will almost never connect. Sometimes I get a 2G connection, but most of the times there is no internet at all. On 2G only, it seems that a few minutes after screen-off, the connection drops. Only after I wake the device, it realizes the connection was down and resyncs with my google account. And even while awake, 2G is still very unstable, I get numerous network errors on the facebook app timeouts on google play.
Device info: Should I test other radios? I noted that it came from the factory with 3822.10.08.04_M, and was on 20.28b.30.0805U_38.03.02.11_M (I don't remember when that changed, I don't think I've ever explicitly changed a radio). Now I just flashed 3822.10.08.04 back, but it didn't change anything. Could HBOOT also have any influence the problem? I remember I downgraded do 0.98 so I could S-OFF using Revolutionary. Now I'm on 6.98.1002.
Lastly, probably a logcat would help. How should I go about doing it? Reboot phone, wait for it to connect, put it to sleep until it disconnects, wake it up, wait for reconnection, then logcat? Since the problem persists both on CM7.2 and CM10, I decided to stick with 10.0 (nk111's cm-10-20130109)
Thanks a lot in advance!

Here's a logcat I took today, if anyone is willing to investigate. Started recording after gtalk was online, turned off the screen, waited a bit, turned it back on and checked that gtalk was offline.
http://pastebin.com/71ZcgjNd

I'm having similar issues on Pacman 18 and 19.3.
My connections seem stable, but I cannot switch between 2G and 3G without rebooting. If I don't reboot, the phone has no internet connection.
Also, on 3G, battery life is very bad.
I'm wondering if it would help to flash a different radio. I never changed the existing radio.

Nexus 5 Wifi Issue

So I've had my Nexus 5 for roughly around a month and I hadn't experienced any issues others have had with wifi not connecting until now. My N5 will show im connected to my home wifi with full bars, but going into quick settings shows it to be orange. Suggesting there's no data transfer, I cannot use any internet based apps with wifi. I've tried some suggestions, switching my router off then on, rebooting the phone, turning some settings off in the advanced panel in wifi settings. All have failed.
I was just wondering if anyone else has this problem and if anyone has a fix to it.

Dillllz said:
So I've had my Nexus 5 for roughly around a month and I hadn't experienced any issues others have had with wifi not connecting until now. My N5 will show im connected to my home wifi with full bars, but going into quick settings shows it to be orange. Suggesting there's no data transfer, I cannot use any internet based apps with wifi. I've tried some suggestions, switching my router off then on, rebooting the phone, turning some settings off in the advanced panel in wifi settings. All have failed.
I was just wondering if anyone else has this problem and if anyone has a fix to it.
Click to expand...
Click to collapse
There was a thread around here somewhere that suggested turning off your mobile data helped fix this problem, I think it was in the N5 General forums.....here it is:
http://forum.xda-developers.com/showthread.php?t=2550690
Don't know if it'll help or not, just saw your thread and had just looked at the other one, figured I'd toss it out there.

Thanks for the reply, just tried that solution but still no luck.

I have a similar problem except that there are phases of wifi not working.
Sometimes I would have around 20-30 seconds of WiFi not working and there would be no data transfer.
Speeds are still fast when it is working however.
I played a little with only using mobile data and no wifi, and everything worked. (Small sample size however).
Seems like this is a WiFi only issue.

So somehow overnight the wifi has managed to fix itself, will report back if the problem returns.

The issue with the wifi returned unfortunately.

Dillllz said:
The issue with the wifi returned unfortunately.
Click to expand...
Click to collapse
Don't know if you've tried this but change your WiFi frequency band in advanced setting to either "5 GHz only" or "2.4 GHz only," whatever your router uses. Might be worth a try.

Thanks for the help, but I've tried changing some settings in advanced wifi settings but it hasn't worked. Even what you recommended I've tried that before and it didn't work.

wifi issue
Also I have the same issue - Im connected to router by wi-fi, home and work and time by time (5x a day) wifi stops working. Wifi is enabled in settings, but there is no connection. Restart the cellphone helps, but after that, maybe an hour, it appears again.
Issue was in 4.4 and still appers in 4.4.1.
Yet did not found how to solve it.

I have the same issue on my gnex running shiny 4.4, but I also had the same issue on 4.3. Tried the wifi options, nothing worked. Unfortunately, no solution for this device that has to last one more week. The double swipe down and tapping wifi gets the connection back, but it is only a work around.
The N5 connects seamlessly to my home and work wifi. A few days ago, I flashed the hammerhead factory image, TWRP and the 4.4.1 update.

Nexus 5 - wifi not switch automatically from data
pcloadletter1 said:
I have the same issue on my gnex running shiny 4.4, but I also had the same issue on 4.3. Tried the wifi options, nothing worked. Unfortunately, no solution for this device that has to last one more week. The double swipe down and tapping wifi gets the connection back, but it is only a work around.
The N5 connects seamlessly to my home and work wifi. A few days ago, I flashed the hammerhead factory image, TWRP and the 4.4.1 update.
Click to expand...
Click to collapse
Hey,
I have the same problem with 4.4.2.(factory rom, no root or not unlocked). Sometimes the wifi not works and get orange. I must put airplane mode to fix it. Its annoying.
But as well happens to me:
When I go out from office or home (where I have wifi connections saved in phone) the phone automatically switch to data plan from carrier. But when I come back the phone stays with data and there is not automatic switch to wifi. Sometimes it help to put wifi off or always airplane mode on/off for a while.
I do not know if it is normal behave of android but I would like have automatic switch to wifi.
I tried to change wifi details (changing bands, etc.) but not helped.
Please help. Thank you.

Is custom ROM or kernel will fix it??

For some unknown reason, as soon as I updated my router's firmware, the problem disappeared.

Updated Android 6.0 solved the issue
Dillllz said:
So I've had my Nexus 5 for roughly around a month and I hadn't experienced any issues others have had with wifi not connecting until now. My N5 will show im connected to my home wifi with full bars, but going into quick settings shows it to be orange. Suggesting there's no data transfer, I cannot use any internet based apps with wifi. I've tried some suggestions, switching my router off then on, rebooting the phone, turning some settings off in the advanced panel in wifi settings. All have failed.
I was just wondering if anyone else has this problem and if anyone has a fix to it.
Click to expand...
Click to collapse
So I had the unfortunate experience of having my wifi go down while on vacation and for 3 weeks I spent a good chunk of time wiping and reinstalling multiple versions from Cyanogen, Paranoid android and 4.4 - 5.1 to no avail. I just did another factory wipe today and installed the new Android 6.0
The Finger Pointing Game is OVER
Read through 30+ pages of other android users with similar experience and some people send their units back to LG and some even managed getting a new handset. There was never any hardware issues with my unit I just couldn't turn on the WiFi but after the install WiFi works? Guess next time you push a software update to our Phones CHECK YOUR SH*T google and Maybe DON'T Take 3 months to FIX your F*CK Up.

I have a similar issue. Since Lollipop my phone almost never automatically connects to my WiFi anymore. What's wrong?

[Q] Wifi problems

After updating to 4.4.4, I've been experiencing horrible wifi problems. The wifi seems to remain connected according to the settings, however, after a short interval the Nexus loses connectivity on all apps. LTE works fine, and switching airplane mode on then off temporarily fixes the issue for a very short period (usually just long enough to load a couple of websites). This problem exists on all wifi networks, and no other device on my home connection has this issue.
Things I've tried:
-Booted into safe mode. Same problem there.
-Forgotten and rejoined network
-Rebooted multiple times
Some notes:
-I'm currently running the ART runtime, however, this issue seems to remain the same on Dalvik.
-My Nexus is brand new and I didn't use 4.4.3 so I have nothing to compare it to in that sense.
This issue is incredibly annoying and makes the device nearly unusable in most scenarios. I'd greatly appreciate any input or suggestions toward fixing this as I'm completely stumped so far.

[Q] Nexus 5 Lollipop Wifi Drops - Major Headache

Ever since I got Lollipop on my Nexus 5, I have had major wifi issues. The wifi will randomly drop and only come back if i switch wifi on and off. Over the course of 2+ months, this has gotten increasingly aggravating. This happens both at work and at home.
Symptoms: while using my phone, all of a sudden the network stops working. This can be in the form of games, web browsing, or anything else. All of a sudden there is just a network timeout. If I disable wifi, the cellular network has always worked fine (so long as I have reception of course).
Things I have tried:
1. Flashing stock with a full wipe
2. Flashing a CM12 nightly with a full wipe - I just tried CM12 in the hopes that they may have had some form of bugfix. I had the same issues.
3. Setting the phone to 2.4ghz only.
4. Disabling PMF setting in WIFI config file.
5. Downgraded to Kitkat. I just flashed CM11. I havent used it too much yet but it seems like it is having the same issue.
I am at my wit's end. Is there anything else I can try? Please help!

At first CM11 seemed to help, but after using it for longer it is exhibiting the same WIFI issues. Any suggestions? My phone is quickly approaching paperweight territory...

Wifi connection troubles after update to 6.0

I'm not sure if this is a Nexus 5 problem or a 6.0 Marshmallow problem but the problem occurred after the update to 6.0 on both Nexus 5s for me and my wife.
There seems to be some bug with my phone while it is asleep (screen is off but phone is on). When it is in this mode, it will not stay connected to wifi. For example, when I enter an area that has wifi, my phone will not connect. It will only connect when I wake the phone. And this isn't just a matter of the phone taking a while to connect. It NEVER connects. Before the update, my phone used to make a connection with my home router before I even walked inside. Now, I can be inside for hours and the phone never connects, until I wake it up. As soon as I wake the phone, the phone makes the connection with no problem. After a few minutes of the phone being asleep, I will wake the phone and the wifi connection will be gone. Now that it is awake again, it connects again with no problem.
I have tried forgetting the network and creating a new one, I have tried different routers, I have tried wiping the cache partition. I haven't tried a full factory reset, and I'd prefer not to, but I guess I will if I have to.
Just thought I would check here first and see if anyone had other thoughts.

Settings - wifi - menu - advanced - Second choice down from the top - choose how to keep WiFi depending on your battery charge %. Regards. Alessandro
Alessandro

vn800art said:
Settings - wifi - menu - advanced - Second choice down from the top - choose how to keep WiFi depending on your battery charge %. Regards. Alessandro
Alessandro
Click to expand...
Click to collapse
Thanks for the reply. Yes, that is what I thought at first also. I meant to say in my original post that my wifi settings are set to "Always On" during sleep. I've tried toggling that between the settings but still have the trouble.

Sorry, my Nex 5 has not this issue on Android 6 build MRA58K.
Alessandro

Yup, have the same issue. When the phone goes to sleep, it seems to disconnects from the wifi and never connects after I wake the phone. When I go into the wifi settings, I see "WIFI Connection Failure". I have to reconnect manually. Like the OP, have it set to always on as well. I also know it's not a router issue because I've tried this on four different routers (two linksys, one Dlink, one TPLink) All same results.
Wonder if this is a phone issue?

Please go here and click on the star to vote for this issue.
https://code.google.com/p/android/issues/detail?id=190667
Google upped this to a high priority Friday morning (Nov 6). The bad news is I think there a couple different WiFi symptoms being discussed here. Most of what is being discussed is the issue being discussed here (not reconnecting when the screen is off).
No idea when this will be fixed, so I build a Tasker profile to toggle WiFi every 15 minutes when not already connected to force a reconnect. I’ve observed it getting disconnected on its own overnight. This should avoid unnecessarily using cellular data.
I’m perpetually waiting for the next release of Android to fix annoying bugs.

vn800art said:
Settings - wifi - menu - advanced - Second choice down from the top - choose how to keep WiFi depending on your battery charge %. Regards. Alessandro
Alessandro
Click to expand...
Click to collapse
GaryP2 said:
Please go here and click on the star to vote for this issue.
https://code.google.com/p/android/issues/detail?id=190667
Google upped this to a high priority Friday morning (Nov 6). The bad news is I think there a couple different WiFi symptoms being discussed here. Most of what is being discussed is the issue being discussed here (not reconnecting when the screen is off).
No idea when this will be fixed, so I build a Tasker profile to toggle WiFi every 15 minutes when not already connected to force a reconnect. I’ve observed it getting disconnected on its own overnight. This should avoid unnecessarily using cellular data.
I’m perpetually waiting for the next release of Android to fix annoying bugs.
Click to expand...
Click to collapse
Thanks for the update Gary. The comment #6 describes my situation exactly. In doing some troubleshooting of my own, I find the disconnection trouble to happen less while on a 5Ghz network vs 2.5. I still have the trouble of it not connecting initially when I come into range, but I find that it is able to hold the connection while asleep.

I am also experiencing this on my Nexus 5 and also found and starred the thread above.
I just listened to 20min of streaming with Spotify to then realize that it had gone into Doze and used the mobile data!
This is more than annoying...
Maybe by disabling Doze for some specific connectivity-related system app? Anyone tried that?

Yes, I moved virtually all of the services type of apps (the ones with the green generic Android icon) to the battery not optimized list. It didn't make any difference for me.
In some ways it seems like it might be a Doze problem, and in other ways it doesn't. Doze shouldn't be affecting anything when the phone is in my pocket and I walk in the house to my WiFi. It also shouldn't be affecting anything when the phone is being charged, which is when I see frequent WiFi disconnects.
It will be real disappointing if this isn't fixed with 6.0.1.

This is still an issue with 6.0.1. Nexus 5 (2013) 6.0.1 MMB29K updated through OTA ZIP pushed with ADB.
Things work properly for a while right after a reboot and then WiFi never connects until the screen is turned on.
Google Connectivity Services C.1.6.7 (2466695) update didn’t make a difference either.

Same problem as the thread starter. HTC A9 anroid 6.0. (newest available OS)

Same problem here with a Nexus 5 .
Please star the problem if you have it.
https://code.google.com/p/android/issues/detail?id=170078

Has anyone tested with a non-stock kernel ?
I'm asking because the problem seems +/- resolved on CM13 (non caf).
No counting CM13, do you know of a more stable rom with the problem resolved?

Does anyone here have Wemo devices? I am reading that wemos, and possibly other devices that emit their own wireless network, may cause problems. I have several of these devices around the house, and wonder if that might be contributing. However, that only would solve the dropped connection bug I have, not the failing to connect while asleep but I have.

Hi mates, my Nexus 5 (android 6.0.1,M8974A-2.0.50.2.29) gets the same troubles with wifi connection but today I tried to put some apps in non optimized list of Doze and seems workig fine.
Thats my non optimized Doze list:
-Google Play Services
-System UI
Try it and let me know if it works properly.

frontomix said:
Hi mates, my Nexus 5 (android 6.0.1,M8974A-2.0.50.2.29) gets the same troubles with wifi connection but today I tried to put some apps in non optimized list of Doze and seems workig fine.
Thats my non optimized Doze list:
-Google Play Services
-System UI
Try it and let me know if it works properly.
Click to expand...
Click to collapse
I had Google Play Services already set to not optimize, but hadn't tried System UI. I will try that out and see what happens.

whitenack said:
I had Google Play Services already set to not optimize, but hadn't tried System UI. I will try that out and see what happens.
Click to expand...
Click to collapse
Welp, that didn't work. Still have the error after not optimizing System UI in addition to Google Play Services.

I don't know if the issue is resolved, but at least for me, it never worked fine so many days after testing some new workaround.
So, this was what I did in my Nexus 5 (latest build, MOB30H).
Uninstall or deactivate Google Connectivity Services, reset your network settings (you will lose your Wifi networks and BT pairings), reboot.
My Nexus 5 has been connecting to the wifi networks even with the screen off for the last 6 days.

Miguun said:
I don't know if the issue is resolved, but at least for me, it never worked fine so many days after testing some new workaround.
So, this was what I did in my Nexus 5 (latest build, MOB30H).
Uninstall or deactivate Google Connectivity Services, reset your network settings (you will lose your Wifi networks and BT pairings), reboot.
My Nexus 5 has been connecting to the wifi networks even with the screen off for the last 6 days.
Click to expand...
Click to collapse
Miguun, has the error returned, or still fixed? I just got the May update, so fingers crossed that fixes it. Otherwise, I guess I'll try your fix. I don't look forward to entering the wifi network information again.

Yup, it is still working !!