[Q] [SOLVED] Intermittent Mobile Connectivity - Galaxy Note II Q&A, Help & Troubleshooting

This is a repost of a post made in the wrong forum: http://forum.xda-developers.com/showthread.php?p=41965120#post41965120
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Hi all
A search of the forums revealed 5 potential threads similar to this but not quite (not same symptom, phone, modem ...)
Keep loosing mobile data connection...
I have installed X-note 3 and found that my mobile internet is intermittent particularly in Youtube where I frequently have to click "No connection , Retry" or "Connection to Server lost, Retry" and in Play Store and Gmail where the problem tends to occur on a screen unlock after it has been unused for a few minutes - about 3 to 5 mins.
I dont believe this is a ROM issue because I d/l various ROMS such as Revolution, Alliance, PacMan, Paranoid and still I get the problem.
I tried installing all 9 of these radios here: http://forum.xda-developers.com/show....php?t=2044937 to no avail.
Also notice that if I set Network Mode to "GSM only" then this makes no difference to the problem (the default is "GSM/WCDMA Auto" which is what I've set it back to)
WiFi works fine.
Any ideas?

same issue here.
a lot of time trying to know why this happen. and i think it is due to fast dormancy.
the phone usually stays in standby in 3g... when you request some data it will automatically turn h or h+. Here is when you will notice the internet moving.
But unfortunately if you have some.coverage issues you can have this problem and then the programs instantly report no conection. If you insist you will see you can obtain connection. 5 seconds later 3g will appear again
It does not mind you will see the bars of coverage at maximum... if there is no quality signal you will have this problem.
I just have this problem at work. Not in other places.
But if you want a constant connection I recommend to keep for example online music while navigating...this will avoid the issue...unfortunately you will increase your data plan..

Yes!! This is exactly what happens.
So it can't be my specific phone but perhaps a hardware design or software issue. I don't recall this I happening before I rooted
Weird

Fixed it - so far at least
Fast Dormancy is the problem. It was enabled by default and I have turned this off. The connection is now fine and seems to be "always on". For me this is okay because I do not have any data limits or pay per MB for data. I do notice that new connections take a little longer to start (for example, time taken to access internet when opening up an app that is not currently running) . This is not noticeable for apps already running (in the background)
This explains ....
http://forum.xda-developers.com/showthread.php?t=1952005

Related

Internet initial slow speed

When I use the default browser, there is always an initial pause before the browser loads the site I have requested. Is there anyway to stop this from happening?
The pause can take up to 10-15secounds before it decides to load the site and its very annoying.
I´ve also this problem.
Fix?
Is this on Wi-fi or 3g? Or both
I've had a similar experience in the past while using 2g/3g. Concluded the DNS servers used by some mobile networks are very slow resulting what you are seeing.
It may be posible to specifiy an alternative DNS server to speed it up??
Both 2/3 g and wifi..
Any solution for this?
Thanks
If its wi-fi and 3g it wont be a dns problem, you tried clearing
some cache maybe??
Just a guess at a fix,
or try using a different browser?
Already tried both solutions... thanks anyway..
Anything else?
Which rom you using?
t-mobile, orange, or stock?
Its odd, mine sometimes does this. Mines sim free on a stock rom. Does it on orange or o2. Does it on different browsers too. It gives me the first few millimetres of render across the top bar then occasionally it just sticks for maybe 15 seconds. But it always does it at that first bit of loading the page. Most of the time it just moves like **** of a shovel from start to finish. Its not just on the very first connection either. You would possibly expect that first render to not be as snappy but theres no reason as to when it happens. Nothing major just something slightly annoying.
I also see this, WiFi and 3G.
Been using Opera mini 5 beta, the last two days, it is lot better/faster that the standard browser.
-------------------------------------
Sent via the XDA Tapatalk App
Ok.. i´ve just solved this problem regarding 3g browsing* but wifi browsing remains.
Any comments?
*Open the Phone dialer and type in *#*#4636#*#* (note the symbols are backwards)
Tap on Phone Information
Scroll Down and set your Preferred Network Type to GSM auto (PRL) - NOTE this does not disable 3G or HSDPA! Speed tests still show I am receiving speeds up to 2.4mbps - NOTE there will still be the 3G and H icons in your status bar
This has fixed the connection dropout issue for me, please let me know if this hasn't helped for someone else.
Have just tried this and things do seem to load faster. Why would it have been set to WCDMA as defualt do you think?
macuser said:
Ok.. i´ve just solved this problem regarding 3g browsing* but wifi browsing remains.
Any comments?
*Open the Phone dialer and type in *#*#4636#*#* (note the symbols are backwards)
Tap on Phone Information
Scroll Down and set your Preferred Network Type to GSM auto (PRL) - NOTE this does not disable 3G or HSDPA! Speed tests still show I am receiving speeds up to 2.4mbps - NOTE there will still be the 3G and H icons in your status bar
This has fixed the connection dropout issue for me, please let me know if this hasn't helped for someone else.
Click to expand...
Click to collapse
Hmmmmm didn't cgreg 92 originally post this? Cut and paste is great and all but credit where credits due! Anyway ive done this already, thanks to cgreg92. But the occasional delay still happens on all connections. Its not regular, just an occasional pain. A fix would be good?
True... copy and paste... but didn´t assume credits..just pointed to a parcial solution to my problem.. now that i´ve cleared that... any solutions out there to slow wifi (with strong signal)?
macuser said:
True... copy and paste... but didn´t assume credits..just pointed to a parcial solution to my problem.. now that i´ve cleared that... any solutions out there to slow wifi (with strong signal)?
Click to expand...
Click to collapse
This is a partial solution. It certainly calmed down my internet connection by 90 odd percent. But this slow occasional, sticking still exists on all connections. Interestingly, my internet connection now sticks about as often as it use to crash out. Its almost as if this method somehow forces the connection through. But like I say, it does occasionally still get stuck. I done this trick weeks ago now, and its still there, just alot better.

Odd connection issue

It started yesterday and I don't know why. Go to check my weather, hit update and after about 10 seconds I get a bubble telling me that an unknown connection error ocurred and to try again later. I can make phone calls, send and receive texts, but can't check my weather. If I soft reset it works fine. Today, go to check my weather again and same problem. Been making phone calls and texting all morning without issue. Soft reset and again it works fine. Obviously, something is going wrong with my data connection over time, but what could cause it to just shut down completely requiring a soft reset to fix?
More weirdness. I tried manually turning on my data connection in the Connection Manager and as quickly as I turn it on it turns itself off. WTF! I haven't done/added anything to the phone in a week. Is this something on AT$T's end, could they be blocking me from using data for some reason?
About 2 weeks ago I did some regedit to have the data connection turn off automatically after 5 mins of non-use. It was working fine after that and anytime it needed a data connection it would make it. I don't remember where the setting was to change it back, but I doubt this is the problem because this issue just started yesterday.
I'm on AT&T also, on the new leaked ROM, and I have exactly the same issue. It started about 2-3 weeks ago, and I noticed the connection drops overnight (during the day I have no problems), and it'll only come back after restart or reset. I think it's AT&T's network...
Miami_Son said:
Is this something on AT$T's end, could they be blocking me from using data for some reason?.
Click to expand...
Click to collapse
Maybe they work on improving their towers and network lol
T-Mobile does that also.
i get a Could not coonect bubble,and have to manualy enable my data conection.If you guys are Tethering our providers automaticly drop our priority level...Unlimited my ass,they tried to cap me at Edge speed and all i had to do was disable/enable the data conection to blast 3g...
I found the problem, but I still don't know what caused it. I'm leaning towards something done on AT$T's end. I have always had my phone configured to use the AT$T ISP in network properties. Apparently, it no longer likes this setting. Switched back to MediaNet and all is working just fine. Problem is that when I first got the phone I did speed tests using both settings and AT$T ISP was faster, so that's why I set it that way. I can't test it now because it won't stay connected with that setting. Can AT$T block users from a particular connection? I don't tether and the most data I've ever used was 280mb last month. Hardly a reason to block me.
I'm not thethering either, my usage is roughly 600 MB/mo and my network is already set to MediaNet. This problem started recently, didn't have it before.
Looks like it is something going on with AT$T. A number of my friends from different states have reported issues over the past 2 weeks with several having severe connection issues the past few days. These are people on varying devices including iPhones, Blackberrys and smartphones. I hope it is due to AT$T finally upgrading their network and not overload from all the new iPhone users and abusive tetherers.

Data connection keeps dropping

I'm running my Captivate glide on Orange network (device is unlocked).
I rooted it following all the steps shown in http://forum.xda-developers.com/showthread.php?t=1378082 (BTW, works great thanks).
I kept AT&T rom, but issue happens also with Rogers rom.
This happens only on 3G/3G+ connections.
WiFi works great.
The issue looks quite simple: data connection drops (very) often.
No more email push notifications, ...
Have to go to Settings > Network > Airplane mode : switch it on and then witch it off to get data connection back.
It is not an operator issue. My other phone(s) are using the same and data connection works.
Is this a radio rom issue ? Is there a fix ? (didn't find a thing related to that issue).
Anyone having this issue ?
Depends on how strong your network is, I have experienced this a few times.
I keep getting this now that I have had more experience with it, anyone else experiencing random sharp drops in data speed/connection?
vil33 said:
Depends on how strong your network is, I have experienced this a few times.
Click to expand...
Click to collapse
Well, I have 4 out of 5 bars... Signal looks strong enough to me.
If I use the same SIM card in a HTC MyTouch 4G slide => Works great, no data connection drops at all !
Looks like it depends on what programs are running and using the data connection:
- email push - connection last long enough.
- when I'm running Bejive (IM) - connection last a bit less (before the 1st drop).
- when I add Skype & LoudTalks : almost every 5 minutes connection drops.
I also noticed that after a voice phone call, sometimes data connection doesn't (cannot) restart by itself ...
Here is an idea :
Is there a way to tweak Operator connection like it can be done with HTC phones : GSM + CDMA, CDMA Only ?
Because when you switch the phone to CDMA only, it uses different frequencies and allow to keep data connections while talking on the phone.
Didn't find that option in Captivate Glide settings ...
frav said:
Well, I have 4 out of 5 bars... Signal looks strong enough to me.
If I use the same SIM card in a HTC MyTouch 4G slide => Works great, no data connection drops at all !
Looks like it depends on what programs are running and using the data connection:
- email push - connection last long enough.
- when I'm running Bejive (IM) - connection last a bit less (before the 1st drop).
- when I add Skype & LoudTalks : almost every 5 minutes connection drops.
I also noticed that after a voice phone call, sometimes data connection doesn't (cannot) restart by itself ...
Here is an idea :
Is there a way to tweak Operator connection like it can be done with HTC phones : GSM + CDMA, CDMA Only ?
Because when you switch the phone to CDMA only, it uses different frequencies and allow to keep data connections while talking on the phone.
Didn't find that option in Captivate Glide settings ...
Click to expand...
Click to collapse
Settings --> Wireless and Network --> Mobile Networks --> Network Mode
Didn't make a difference for me using HSPA only.
vil33 said:
Settings --> Wireless and Network --> Mobile Networks --> Network Mode
Didn't make a difference for me using HSPA only.
Click to expand...
Click to collapse
I just checked ... I don't have the "Network Mode" option in "Mobile Networks" section.
I have Roaming, allow data connection, APN, ... but not Network mode.
Weird...
I checked the operator info. Nothing out of the ordinary there.
I'm stuck ...and it keeps happening. No solution for now.
frav said:
I just checked ... I don't have the "Network Mode" option in "Mobile Networks" section.
I have Roaming, allow data connection, APN, ... but not Network mode.
Weird...
I checked the operator info. Nothing out of the ordinary there.
I'm stuck ...and it keeps happening. No solution for now.
Click to expand...
Click to collapse
Maybe try flashing the Rogers kernel and ROM since that's what I have?
vil33 said:
Maybe try flashing the Rogers kernel and ROM since that's what I have?
Click to expand...
Click to collapse
Already did that, but that was a few days ago when looking for the WiFi tethering feature ...
I'll flash it back to Rogers kernel & ROM and test.
Update: Flashed Rogers rom.
Good news is I now have the Network settings back. (AT&T rom is not the right one, for sure !)
Data connection last longer. But the issue is still here.
Still investigating...
Anyone else having this issue ?
the day before yesterday, I went to the copier room in my school and stayed for about 2 hours (too many copying). before i get out, i have no signal (mobile network not available). I need to go out to have signal back or reboot.
It happened again yesterday on the exact same location, I'm going to be there again now.
I believe it might be location wise....in my case at least.
gabby131 said:
the day before yesterday, I went to the copier room in my school and stayed for about 2 hours (too many copying). before i get out, i have no signal (mobile network not available). I need to go out to have signal back or reboot.
It happened again yesterday on the exact same location, I'm going to be there again now.
I believe it might be location wise....in my case at least.
Click to expand...
Click to collapse
I checked, looks like it is not linked to a specific location. I've been travelling and issue kept occuring.
Once data connection is ok, it usually stays up for 2 to 5 minutes, then drops.
"4G" symbol is still displayed - but no more data connection. Web pages not available in browser, no email sync, no more IM, ...
While data connection is down, Cellphone still works, WiFi as well.
It may be linked to an APN issue ... Or definitely a Radio ROM issue.
I'm running Baseband I927RUXKJ5.
Anyone else having this issue ?
When I got the phone the AT&T rep told me there was a known issue with the phone dropping down to lower data speed. He told me if I experienced it to get a new SIM card. Doesn't sound exactly the same but maybe try that?

Internet disconnects always after around 10-30 seconds since WiFi connected

1. I connect my phone to my router - WiFi connected, signal strength maximum, everything alright.
2. I start browsing the net.
3. After very short time (usually around 10-30 seconds, sometimes 3, sometimes 60) any web browser gives me error "Web page not available".
WiFi is still connected, but Internet isn't.
4. I turn WiFi off and then back on.
5. Go to 2.
It's very annoying and makes WiFi useless - if I want to watch a single video on YouTube, I need to restart my WiFi like 10 times while watching.
I should mention that all of my other devices work fine with this router/network.
What I've tried / done:
-all possible reboots and resets
-all possible phone wifi settings
-reconfiguration of my router and entire network
-Android Revolution HD and Cyanogenmod 10.2 ROMs
It probably isn't hardware issue as I have had my wifi hardware changed recently by official warranty service before unlocking bootloader and losing warranty. The reason for this was popular poor wifi range issue. But my problem with net disconnecting occured before as well as after the warranty service. I'm ready to buy you a few beers if you can solve this!

Nexus 5X randomly lose connectivity

Hello there,
I am encountering a problem with my beloved N5X...
Since a few weeks it randomly loses connectivity (both cellular and Wi-Fi)
And after a few seconds (sometimes minutes) it catches the network back.
For example:
I wake up the phone for checking messages, and i see WhatsApp saying "searching for messages", no warning icons for network.
Then i try to load a Chrome page, it does not load..
After a few seconds all is getting back to normal and everything loads. (the web page, new messages notifications comes on, etc)
I tried so far:
- Reboot (after a reboot it works normally for a few hours, then problem begins again)
- Resetting network parameters (does nothing)
- Complete factory reset (had 2 weeks problem free then the problem begins again)
- Flashing custom ROM (from Google factory to last Lineage OS 15.1)
For informations:
- No VPN
- No gaming, the phone never heats up
- Good network coverage (both cellular and Wi-Fi)
- No network related apps
- The phone is 3 years old, never felt on the ground
Any ideas?
Thanks a lot for reply, and have a nice day!
I'm having a similar problem since Oreo update, but only on WiFi. On 4G network is working flawlessly but I think is due to carrier network settings on cellular towers.
Every search I made on the web to address the issue finished with a lot of posts read but no decent solution whatsoever, but the other day a reply on reddit made me think and I found a setting on my router WiFi AP section called "Unscheduled APSD (Automatic Power Save Delivery)" and since I disabled it my phone seems working better. I don't know if it's just random luck or it was really the cause of the issue but you can try.
Hope it helps.
.bucch said:
I'm having a similar problem since Oreo update, but only on WiFi. On 4G network is working flawlessly but I think is due to carrier network settings on cellular towers.
Every search I made on the web to address the issue finished with a lot of posts read but no decent solution whatsoever, but the other day a reply on reddit made me think and I found a setting on my router WiFi AP section called "Unscheduled APSD (Automatic Power Save Delivery)" and since I disabled it my phone seems working better. I don't know if it's just random luck or it was really the cause of the issue but you can try.
Hope it helps.
Click to expand...
Click to collapse
Hello,
Thanks for your reply.
I searched everything on the phone that could be wrong and i also ended up that router might be the cause.
I did not found the setting you mention (i'm on Synology router) but i tried to disable the 5 GHz frequency band and use only the 2.4 GHz one.
Since then the phone works perfectly! Although the Wi-Fi speed is a bit slower..
I hope this can help you too!
breacH86 said:
Hello,
Thanks for your reply.
I searched everything on the phone that could be wrong and i also ended up that router might be the cause.
I did not found the setting you mention (i'm on Synology router) but i tried to disable the 5 GHz frequency band and use only the 2.4 GHz one.
Since then the phone works perfectly! Although the Wi-Fi speed is a bit slower..
I hope this can help you too!
Click to expand...
Click to collapse
I was on 2.4Ghz only since a few months but had the issue anyway before disabling uAPSD.
If your bandwidth is reduced is probably because your network is on a "busy" channel, try scanning all the wireless networks around your home (i use wifi analyzer on my phone) and see which are the "busy" channels and set yours on a free one. Bandwidth on 2.4 and 5 ghz should be the same, the pro of the first is a better (wider) coverage of the signal, mostly through walls and the pro of the second is less interference with other wireless technologies and environment at expenses of the coverage.
.bucch said:
I was on 2.4Ghz only since a few months but had the issue anyway before disabling uAPSD.
If your bandwidth is reduced is probably because your network is on a "busy" channel, try scanning all the wireless networks around your home (i use wifi analyzer on my phone) and see which are the "busy" channels and set yours on a free one. Bandwidth on 2.4 and 5 ghz should be the same, the pro of the first is a better (wider) coverage of the signal, mostly through walls and the pro of the second is less interference with other wireless technologies and environment at expenses of the coverage.
Click to expand...
Click to collapse
Well, after a few days i noticed the problem still persist even on 2.4GHz, but less than before..
Unfortunately Synology router does not have APSD option in the Wi-Fi settings.
I tried to put Protected Management Frames (PMF) on "enable - optional", that setting was disabled before.
Wait and see.
Thanks again!

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