Database Users

My theory on data connection loss on leaked 2.2

After some investigation, I believe the data connection loss for me on 2.2 seems to be related to WiFi. If I have WiFi on and connected and leave the wifi area (elevator) it seems that's when the issue occurs. To test it out, I have been turning off Wifi while still connected and I'm heading out. So far I haven't lost data connection since i've been doing this and I specifically did things that led me to lose data connections in the past.
I think the software believes the Wifi is still connected when its not and thus the 3G data doesn't come on properly.
I'll post back if I have the issue but I'm continuing to try this and hope it works. Nothing and I mean nothing else appears to be an issue for me apart from this thanks to fixes and my good luck it seems.

I have had the same issue. It doesnt happen all of the time for me. It happened right after installing the ROM. I rebooted and it solved the problem. Since Friday, I have had it happen twice. Prior to replying, I turned off the WiFi and the phone switched to 3g without any problems. I'm trying to reproduce it....I think my problem occurs after I have been charging the phone with WiFi on-like it gets stuck. I will not know until in the morning. Like I said, it hasn't happened but twice.
Sent from my ADR6300 using XDA App

Further testing and I think my theory is true. No issues still. Usually by now I have the problem.

When I wake up my phone, it's connected to 3G, but I am on wifi.

Anyone else having this problem? I don't remember having this happen on my MT3G.
It's really eating up the battery.
I am on JI2, and I never experienced this until last night after using Odin.

you have to change the wifi sleep policy in the wifi settings. Got to settings, wireless networks, wifi, then press the menu button and select advanced.

OMG! thanks, you're a real life saver.

Sorry to bring up an old thread. I have it set to never sleep but it still does. Any ideas? Seems when the display times out, it switches off wifi.

I have wifi on all the time at home and it's set to never sleep. Sometimes I see both the wifi and 3G icons. I know my wifi signal is strong, so no idea why the phone sometimes also seems to need a 3G data connection. One example is when I test GPS at home the 3G icon will pop up briefly. Another is following a reboot. But I see other times as well, and sometimes it stays for quite a while, but eventually goes away. I wonder if perhaps some ports get blocked by my router and the phone uses 3G communication to get around it. Bit of a mystery, but I don't see any other negative symptoms.

Here is something I have experienced. This is regardless of what ROM I am on.. Stock, Bionix, whatever...
I have wifi turned on at work. Sometimes I would see wifi and 3g on at the same time.
Now today, while texting, I noticed that my Wifi connection dropped to nothing, and at that point my 3g kicked in, which I expect it to. But when my Wifi reception kicks back up again, my 3g didnt turn off. I turned off Wifi and turned it on again, and my 3g turned off.
Anyone else getting the same experience?

samnada/ELStiko, That's what I'm really seeing too as I thought my wifi was just going to sleep.

ljv said:
samnada/ELStiko, That's what I'm really seeing too as I thought my wifi was just going to sleep.
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Click to collapse
I'm pretty sure my wifi isn't going to sleep. The wifi icon is on all the time with at least 3 bars. My cell signal is definitely weaker in my location. So, if it's seeking the strongest signal my wifi will always win.
Besides the possibility that my router is blocking some ports the phone wants to use, there's also a possible security issue. I know at one point the TMO My Account app would force a switch to cell communication versus wifi and I believe it was due to security concerns. Maybe some apps do the same thing.
I just did a GPS test, got a lock, stopped the test, closed the app, and the 3G icon stayed up for a couple of minutes then went away. Just one example.
Does seem odd, but I've just assumed there's some rational explanation. Could also be a bug...

your lucky you wake up and you have 3g. i wake up my phone is always on edge. lol
Sent from my SGH-T959 using XDA App

Phone sometimes disconnects when using WIFI

hi, sometimes when i look at my phone, usually after being on wifi the phone shows no bars.
sometimes it comes back on in a min, i tried airplane mode but it wouldnt work. so i restarted it and worked fine.
not sure why it happens, does anyone else have this? could it be due to some Wifi calling setting? not sure why phone seems to just cut off.

anyone have any idea why this may be happening?
does it turn off radio for wifi calling somehow or? just random.

I have a similar issue, but not equal. Sometimes, when I try to connect to the network I always do (home), it simply doesn't work. Scanning - disconnected - scanning - disconnect. Only a phone reset fixes this.
Sheep ROM 2.0
AbyssNote Kernel 2.5

I had a similar issue a while ago and sent Mine back to the seller but the seller claimed neither they nor Samsung could find a problem with the phone. Thankfully The seller sent me a replacement which no longer gives me this problem so it may be the handset, though it could also be the setting/Conflicting app. Someone reported here his problem Was solved after adjusting a w ifi regulating app

i have a 3-day old gnote and i started noticing this problem after i have my phone rooted. the wifi icon stays on but there's no internet connection. turning the screen off and waking the phone after a minute solves the problem but its annoying to be losing connection when you're needing it. i'm on stock KKA.
Sent from my GT-N7000 using Tapatalk

pinoypower said:
i have a 3-day old gnote and i started noticing this problem after i have my phone rooted. the wifi icon stays on but there's no internet connection. turning the screen off and waking the phone after a minute solves the problem but its annoying to be losing connection when you're needing it. i'm on stock KKA.
Sent from my GT-N7000 using Tapatalk
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Click to collapse
Not a user error so need to contact Samsung-don't think is anyway

I have a somewhat similar problem. When I am using wifi for somewhat long time, I am unable to connect back to my 3g. Or if I was on 3g connection and I move out of coverage area for a little more than 10 minutes, I can't reconnect to 3g. Only 3g connection has this problem though, everything else works fine.
If I restart the phone, I can reconnect. Setting to airplane mode and resetting doesn't help. Neither does resetting the mobile network operators.

Yes, the problem seems to be software related since there is no actual problem with receiving 3g/phone.
yesterday i drove back 10 hrs and streamed music/radio the entire way with only a few tiny interruptions in reception.
but often still if i just take my phone out of my pocket, the "phone" part will be off and usually turn back on within 1-2 mins.
but this is quite annoying since sometimes il literally be waiting for 1-2 mins to place a call.
my phone is "not" rooted.

Are Wifi Issues Hardware or Software Related?

Hi everyone,
I got my Nexus 10 a week and a half ago, and, for the most part, have been loving it. However, I've been having some annoying wifi issues. Every once in a while, the connection will go from 3-4 bars to no bars (but still connected) or disconnected completely. Sometimes this happens over and over in a short period of time (10-20 minutes), and sometimes it happens once and doesn't come back for a while. This happens on both my home's wifi and my university's wifi. I've been looking around the forums, and it seems like some other people are having similar issues. My question is: has it been determined whether this is a hardware or software issue? Should I RMA the device (I have a couple days left to do this)? Thanks!
Edit: I've also been running into problems with streaming video from YouTube and Netflix. It'll load the video fine for the first 5-10 minutes, but then it will stop to buffer every 5-10 seconds (in the YouTube app) or become low-resolution and pixelated (in Netflix). This also occurs on both my home and university WiFi, and both have download speeds of 15-20 Mbps. I've tried clearing the cache for both apps, which does nothing.

Sibelius343 said:
Hi everyone,
I got my Nexus 10 a week and a half ago, and, for the most part, have been loving it. However, I've been having some annoying wifi issues. Every once in a while, the connection will go from 3-4 bars to no bars (but still connected) or disconnected completely. Sometimes this happens over and over in a short period of time (10-20 minutes), and sometimes it happens once and doesn't come back for a while. This happens on both my home's wifi and my university's wifi. I've been looking around the forums, and it seems like some other people are having similar issues. My question is: has it been determined whether this is a hardware or software issue? Should I RMA the device (I have a couple days left to do this)? Thanks!
Edit: I've also been running into problems with streaming video from YouTube and Netflix. It'll load the video fine for the first 5-10 minutes, but then it will stop to buffer every 5-10 seconds (in the YouTube app) or become low-resolution and pixelated (in Netflix). This also occurs on both my home and university WiFi, and both have download speeds of 15-20 Mbps. I've tried clearing the cache for both apps, which does nothing.
Click to expand...
Click to collapse
I'd say they are software, since I have more coverage of the wifi and I didnd't see any lose of signal, however on 4.2.1 I was losing the signal every 2 min or less.

lKBZl said:
I'd say they are software, since I have more coverage of the wifi and I didnd't see any lose of signal, however on 4.2.1 I was losing the signal every 2 min or less.
Click to expand...
Click to collapse
Are you on 4.2.2 now? Do the WiFi drops persist after the update from 4.2.1?

Sibelius343 said:
Are you on 4.2.2 now? Do the WiFi drops persist after the update from 4.2.1?
Click to expand...
Click to collapse
Yes, im on 4.2.2 and I don't have any wifi drops now :laugh: Finally!

I'm on 4.2.2 and I have wifi drops still!

cajuncartfan said:
I'm on 4.2.2 and I have wifi drops still!
Click to expand...
Click to collapse
Yeah, I'm on 4.2.2 as well, and I still have all sorts of WiFi problems. I'd like to get a little more info on this. Does anyone else still have WiFi dropouts on 4.2.2? And does anyone have any insight on the video streaming issues? It might just be due to my fluctuating WiFi connection, but I'm wondering if it is a separate issue.

Sibelius343 said:
Yeah, I'm on 4.2.2 as well, and I still have all sorts of WiFi problems. I'd like to get a little more info on this. Does anyone else still have WiFi dropouts on 4.2.2? And does anyone have any insight on the video streaming issues? It might just be due to my fluctuating WiFi connection, but I'm wondering if it is a separate issue.
Click to expand...
Click to collapse
I'm on 4.2.2 and my WiFi issues just started. It's driving me so crazy that I wiped and went to an older Rom with no luck. Hoping it might be my router so gonna try and test on another unit next.

I used to have wifi drops, and there is a couple large threads here already on this issue. But I managed to fix my wifi stability by changing router settings. I had the same thing of complete drops where the wifi disconnects completely every so often. It would happen at random, sometimes every 20-30 seconds, sometimes every couple minutes, other times 10-15 minutes between drops, a few times 3-4 hours between a dropout. It happens on other Android devices I own too though, so it isnt exactly a problem with the Nexus 10 exclusively. it took a LOT of work to finally find the settings that work, but I finally did it and now all Android devices I own are perfectly fine on wifi.

EniGmA1987 said:
I used to have wifi drops, and there is a couple large threads here already on this issue. But I managed to fix my wifi stability by changing router settings. I had the same thing of complete drops where the wifi disconnects completely every so often. It would happen at random, sometimes every 20-30 seconds, sometimes every couple minutes, other times 10-15 minutes between drops, a few times 3-4 hours between a dropout. It happens on other Android devices I own too though, so it isnt exactly a problem with the Nexus 10 exclusively. it took a LOT of work to finally find the settings that work, but I finally did it and now all Android devices I own are perfectly fine on wifi.
Click to expand...
Click to collapse
What router settings should I try changing?

Sibelius343 said:
What router settings should I try changing?
Click to expand...
Click to collapse
http://forum.xda-developers.com/showpost.php?p=37834076&postcount=36

To be honest noone should have to change router settings, I have 3 Android phones,nexus 7, laptop and Xbox 360 connected all at the same time and still the only thing to lose a signal is this 10 inch slab. It's ridiculous.
Considering selling it already after 3 weeks.
Sent from my Nexus 10 using Tapatalk HD

Network issues (Data)

I'm experiencing issues with the network, I often have to go to plane mode then disable it to get my connection back (I always have the 4G logo on screen, but internet pages won't load, facebook either, well everything) I'm seeing posts about the WiFi issue, but nothing about this, am I the only one experiencing this ? It occurs every 5 minutes or so, pretty annoying when you are in the middle of a youtube video or so..)
Thank you in advance !

I could say I have the same issue.

I realize this post is 2 months old but I also have this exact same problem. Data on WiFi works perfectly fine. On actual mobile data though it works great for a long period of time (hours - days) then suddenly gets horrible. Disabling and re-enabling data seems to fix it most of the time, then it works great again for a good while.
Would this indicate a software glitch? I've been wondering if I should try some custom ROMs. Or would it be a problem with the physical antenna or data module in the phone?
I'm on the verge of sending it back under warranty but if it's software maybe something else can be done to fix.