Database Users

Nexus 10 Wifi stays connected but stops working

Hey guys,
I've had this problem for a while, so I'll try to keep the post as short as possible with as much info as I can.
For the last 6 months or so, the internet on my Nexus 10 frequently cuts out. The wifi will remain connected, but any app accessing the internet will time out. I only use the tablet for Reddit/email/youtube, and it's rendered useless because threads will load forever on reddit, youtube barely works, etc. I've reformatted the tablet at least a dozen times trying different things to fix the internet, it's so bad that on the initial setup, where you enter your Google Email/Password, it'll time out authenticating 10-20 times before it goes through. I tried to download Hearthstone yesterday, but the download would stop at some stage and just sit there till I cancelled it and started over. The Wifi works perfectly well on all other devices on my network (including nexus 4 and nexus 5).
When I first got it, I installed Cyanogenmod, and had no problems (but I didn't like it). After a year or so I went back to stock android, and that is when the wifi problems started.
Device:
Nexus 10 - Lollipop 5.0.1 - No Root(currently)
What I've tried:
Multiple factory resets.
Reinstalling with ADB.
Using Clockworkmod to clear all the caches and reinstalling.
Using Nexus Root Toolkit to wipe and reinstall.
Changing multiple settings on my modem (belkin surf N), like only broadcast n network, changing channels, and many other things.
Installing a pingmeter app to constantly ping the router every second.
There was a thread on these forums about rooting and commenting out a line in the hosts file, something like com.android.play or something of that sort, but it wasn't in my hosts file, only 127.0.0.1 and nothing else.
Calling Google Tech support, there only suggestions were to try booting in safe mode, and to restart my router...
And probably a few other things, since I've tried so many times to find some way to resolve the issue.
I've Googled everything I can think of, joined random IRC's to try and get support, asked on Reddit, etc. Still no luck.
Thanks in advance for any help.

I been on lollipop for a while now but notice each day the wifi speeds get worse and worst. Dont know what's going but I notice alot of people complaining about wifi after installing lollipop.

Having a weird Wifi issue...

About 3-4 days ago, my connections to wifi went in the toilet. Meaning; every wifi spot I connect to (home, parents, store, restaurant) gives me around or less than dial up speeds. Even though I was having this on every wifi connection I use, I still troubleshooted my on router setup, to no avail.
After searching pretty intensively, I came across one other person with this exact same issue. He found that his issue fixed with the latest Android Webview update; however, mine did not. So, just to test it, I disabled Webview entirely, and magically, my wifi was fast again. But, about 45 mins later, it got slow again.
I am sure a factory reset would fix it, I just got done getting everything back on it from a reset 2 weeks ago after my Lollipop update. Does anyone have any ideas how I can fix this issue, without a factory reset?

Bump.

I tried a factory reset, and it didn't fix this issue. I'm assuming I just need to get a replacement.

I had to fight with Verizon (as I have the VS980) for over an hour, but I finally have a replacement coming. Seeing as no one seems to either have any clue on this issue, or are willing to help, I figured it was all I could do.

Connectivity issue

Hello! I got my new OP2 last week. Straight out of the box had connectivity issue. Both wifi and data connection are fine at first glance, but the data keeps cutting off (both on wifi and LTE). When I wanted to log into google account I had to repeat the steps multiple times as it would give me an error "communication with servers unavailable" (or something simillar). Seems like the data flows through in short intervals. Browsing kinda works, since there is not much refreshing, youtube videos or downloading apps on the other hand are a complete nightmare (it took me a whole day just to update and DL some 20 apps). Anyways, I tried all possible "solutions" to similar problems I was able to find, such as clearing cache and changing from DHCP to static ip (on wifi).. Even went through trouble of (clean) flashing stock 2.0.1 and 2.1.1 oxygenOS ROM, changing Kernel,...the issue remains. :crying: So my question is: is there anything else I can try, or should I attempt to get the device replaced?

Sudden issues with wifi + LTE, MHC19Q (Solved)

Edit 5: Gonna go ahead and declared this solved, the problem hasn't come back since I factory reset and reflashed MHC19I (not Q) from scratch. No more issues with wifi not autoconnecting or taking excessively long to connect, no more battery drain (got nearly 48 hours this weekend including a good amount of time spent in a poor/oversaturated service area at the Grand Prix), etc. Probably going to wait until the May update before flashing any OTAs.
Edit 4: Two days later and still seems to be working fine. I'm seeing some other issues on the April update (significant battery drain, slow wifi connect, etc.), so this morning I tried rolling back first to January (wouldn't get LTE) and now to March (fine so far). With the exception of keeping my media, I'm setting this up completely new, i.e. redownloading everything from the Play Store, to avoid any weirdness from restoring backups.
Edit 3: A factory reset done via TWRP (which retained my media) seems to have solved it for now. At any rate it's been acting normal longer than anything I've done before. This includes restoring my apps + their data via TitaniumBackup (but not system backups), reflashing SuperSU and otherwise getting my phone back to where it started. I've tested things that were known to cause it before like having wifi active but leaving my signal area and having it revert to cell data. The only issue I've noticed now is that wifi no longer seems to autoconnect when it's in range of my router. Not a huge deal but kind of annoying, if anyone has a fix for this I'd appreciate that too.
Edit 2: This issue is NOT resolved. The problem came back after working for a little while. Once the LTE fails the wifi will never reconnect on its own. It seems like everything still works except loading images from anything (reddit, instagram, etc.) and loading bookmarks. I can make google searches, download apps, go into reddit comments, go to instagram profiles I've never been to before, and so on. Is my device defective?
Edit: It appears that going through the motions of flashing the latest update (save for recovery.img and formatting userdata) has fixed the issue. This includes reverting to the stock kernel and flashing the vendor.img, which I hadn't done before. Wifi can be flipped off and on and will reconnect and there are no "!"s anywhere in sight. Strange considering I essentially went through the whole process minus the stock kernel and vendor.img, just out of order, with no effect.
Can anyone offer insight as to what piece of that process might have fixed this? It's not clear to me which pieces of the update are responsible for wifi and cellular connectivity besides the radio and kernel. Leaving the original post below in case anyone has anything to add or is going through this same issue. I'll update this post if the issue returns.
---
As of just this afternoon I'm suddenly getting a strange new issue that I can reproduce pretty consistently. I first noticed that my wifi signal was claiming to be connected but with no internet, and showed a little exclamation point next to it. I disabled wifi, and noticed the exclamation point jumped over to LTE. In both cases, I can still essentially use the connection. I disabled cellular data with wifi connected and could still browse the web, and likewise if I disabled wifi and the exclamation point was back on the LTE symbol. However, I notice some apps like Instagram will refresh posts but no longer load images, and reddit will load posts but not follow any links or load any images either.
Things I've tried:
-Flashed the 2.50 radio (down from 3.61)
-Flashed the MHC19Q system.img and cache.img
-Installed ElementalX kernel (at first it looked like it fixed the LTE issues, but really it just made the "!" go away; still seeing the same issues when I connect to wifi and then disconnect)
-Deleted and readded the nxtgenphone APN (I'm on AT&T)
-Tried to get into *#*#4636*#*#; I get "Connection problem or invalid MMI code."
-Cleared cache/dalvik in recovery (hey, you never know)
-Rebooted my router to make sure it's not an issue there; all other wireless devices on my router are fine
-Removed and reseated the SIM card
In all cases I can still send and receive texts and certain apps will continue to function about halfway, such as Instagram mentioned above. Switching airplane mode on and off doesn't help. Furthermore, once the wifi connection first gets the "!", it will no longer automatically reconnect as it doesn't find a working internet connection.
After an initial reboot it will appear to be fine; wifi connects automatically, no "!"s anywhere in sight, and everything seems to work. As soon as I disconnect from wifi, this issue starts. As mentioned, it will no longer reconnect to wifi and cellular data doesn't seem to work.
Anyone have any thoughts or suggestions as to what the issue may be? This started out of the blue this afternoon, I haven't made any changes to my phone since flashing the April image. My bootloader is unlocked and I'm rooted, and save for the ElementalX experiment (going to go back to the stock kernel) everything else is stock.
Any help is appreciated. If you need any more info, let me know.

Did your problem get resolved or did it come back. I'm having a number of problems on t-mobile since upgradingj to mhc19q

acathrow said:
Did your problem get resolved or did it come back. I'm having a number of problems on t-mobile since upgradingj to mhc19q
Click to expand...
Click to collapse
So far so good, the issue hasn't returned, although I'm really not liking the latest update. I'm considering rolling back (is that something I can do? I don't see why I couldn't) to January or so.

I'm still in limbo. T-mobile have been helpful but it's in Google Nexus support's hands and they have been less than responsive to say the least.
Next step is likely replacement device but in the mean time I just finished flashing 19i and will see if that has the same issues, then I'll try the previous build.
I'm kicking myself that I didn't check the version numbers I was on before applying April update. Ah well, lesson learned,

acathrow said:
I'm still in limbo. T-mobile have been helpful but it's in Google Nexus support's hands and they have been less than responsive to say the least.
Next step is likely replacement device but in the mean time I just finished flashing 19i and will see if that has the same issues, then I'll try the previous build.
I'm kicking myself that I didn't check the version numbers I was on before applying April update. Ah well, lesson learned,
Click to expand...
Click to collapse
Out of curiosity are you doing a full wipe before flashing different builds? I noticed in my case the issue didn't go away until I did a factory reset, which I think suggests something was corrupt or otherwise affected in the system partition. Since doing a factory reset (and now after doing a couple more) the issue seems to have gone away and I'm no longer having wifi/LTE issues - well, except for not getting LTE at all on the January update, so now I'm back on MHC19i.

Current status: My issue appears to be with t-mobile band 12, the new band that t-mobile is rolling out now.
It appears that the phone "prefers" band 12 to the older bands (like 4).
Rolling back to an image before band 12 was added (eg MDB08K from October) gives me back reliable LTE on band 4.
Sent logs to t-mobile and Google and waiting.

Random restarts after updated to nougat :/

So i updated a few days ago to nougat, everyhing went fine now as of yesterday my edge suddenly random reboots for no reason? i dont get it.. i have tryied clear cache from partition and even did a factory reset still nothing.... what can the problem be ? it never restarted before the update so clearly something messed up my phone after that but how..... i hate this any fix for this?

I don't have such experience and seems initially you did not have either.
Do you use stock/unrooted?

Do you use whatsapp gifs?

yes im stock no root or dont plan to either.. using whatsapp but no gifs why ?? this really sux

I'm having this problem too. 2 random reboots last week. Today it rebooted and because I had secure startup enabled it got stuck in the "enter pin" screen, so the alarm didn't work and arrived 2hs. late to work.

Hello,
Same for me

went back to 6.0.1 and the problem is still there.. OMG i give up on samsung god dammit... worst luck ever my old S5 was better then this

Hi,
I have experienced this on my new S7 Edge today, 2 random reboots. Did any of you manage to get to the bottom of this probem?
Thanks

Hello I have a Galaxy S7 and since the update to Android Nougat 7.0, my phone restarts randomly, it can stay an entire week without restart and it can also restart 2 days in a row. It's totally random. I have reset to the factory settings and I have reinstalled only the most important applications (facebook messenger, viber, yahoo mail) but unfortunately about ten days after reset, the problem has reappeared. What could be the cause of this problem? For info, the firmware version installed on my phone is: G930FXXU1DQBO. Also, I saw on SamMobile that the countries that received the update later, had a new version. Could the problem come from that? Is this a bug in the firmware installed on my Galaxy S7. Thank you in advance for your help.

GeekTN said:
Hello I have a Galaxy S7 and since the update to Android Nougat 7.0, my phone restarts randomly, it can stay an entire week without restart and it can also restart 2 days in a row. It's totally random. I have reset to the factory settings and I have reinstalled only the most important applications (facebook messenger, viber, yahoo mail) but unfortunately about ten days after reset, the problem has reappeared. What could be the cause of this problem? For info, the firmware version installed on my phone is: G930FXXU1DQBO. Also, I saw on SamMobile that the countries that received the update later, had a new version. Could the problem come from that? Is this a bug in the firmware installed on my Galaxy S7. Thank you in advance for your help.
Click to expand...
Click to collapse
Had that issue with my Note edge after updating FW to stock 6.01, many threads in Note edge forum report the same. Samsung gave a s..,,,t , never fixed it.

Maybe Whatsapp? Or SIM card?
I had the same issue, but worse. Between 15 and 30 random reboots a day, during calls, during emails, during sleep. Often (and every morning) I picked up the phone and it said it had a reboot, therefore no finger print wakeup etc. After a ton of googling, Wipe Cache, Safe Mode and all that (changed nothing) I ordered a new SD card. Changed nothing. Then I did a factory reset, re-installed all apps via Google backup. Changed nothing. Meanwhile Samsung customer support tells me to send in the phone, may take a few weeks - haha. So I did another factory reset, but then only re-installed the most necessary apps (although I don't want to have a flagship phone and not install whatever i want). Changed nothing. Still 15-30 reboots a day. Plus a seriously bad battery life, maybe because of the reboots, or nougat, or both. Enough for me, and all the more reason not to buy S8. I ordered a Mate9Pro, which is not as gorgeous as the S8, but at least big, 6GB RAM, fastest chip around and has a 4000mAH battery. However, after re-installing all my apps on Mate9Pro and putting my SIM in there (runs smoothly), Whatsapp (without the SIM) kept popping up on the S7. So I uninstalled. While I was at it, I also uninstalled airline apps (Air Berlin, easyjet, Lufthansa, Miles&More - don't ask why). Since then, no reboot on the S7 (8 hours so far, but that's the longest period since the Nougat update). So the maximum damage has been done (had to buy a new phone), and now the old phone works just fine. Maybe it was Whatsapp, or another app causing it to fail? Or the SIM card? I have no clue but maybe someone with some knowledge can make sense of it?

I was having the same problem after nougat update. I noticed that after the reboot I would have notifications from specific apps like airasia app , I shut off notifications from almost all except a few important apps. Reboot no. has drastically reduced since then.