Develop Bugs

[Q] Constant Wi-Fi disconnect/reconnect

My note 8.0 is having an issue where it does not hold its connection to Wi-Fi for more than a few minutes, at most, and often does more than that. It honestly does not affect performance a great deal, that I can notice at least, but I do think it drains the battery much more quickly and the constant alerts are quite distracting and get in the way of my handwriting input.
The common wisdom seems to be to have Wi-Fi always on, but that didn't change the behavior whatsoever.
I did not notice this behavior until I finished my vacation and came back to my work where we have a much more complex network than my parent's house. Here, there are numerous routers throughout the office complex to ensure total Wi-Fi coverage. They use 802.1x authentication. I'm wondering if the device is basically "choosing" a new router each time it disconnects. My desk is about 10 feet from a router, so I know signal strength is not the problem.
I just can't figure out what else to do or try to do. This is a Wi-Fi-only model running Android 4.2.2 as updated OTA from Samsung. Unrooted, locked bootloader.

phone casting sometimes there sometimes isn't

whats up everyone. i was using the iphone 6 for a couple months and used the little cast button at the top of youtube and stuff to shoot the video to the tv and it was always there and always worked. i just traded it for a note 4 the other day and i can't figure out why the little symbol is only present about maybe 40% of the time. i have not changed anything on my home network or cable/tivo setup. i see it there sometimes and more often than not i don't see it. is this a common issue?

Whenever I had that issue it was because my phone was switching networks: 2.5 ghz wifi --> 5 ghz wifi --> mobile data. Possibly turning off the connection optimizer setting would keep it from randomly switching.

i will give it a shot thanks

I have the same problem and my phone is always connected to one wireless network. So I think the problem is something else.

slow wifi

Hey guys am i the only one having issues with wifi, its so painfully slow takes forever to load a webpage forget about watching a video, and no its not my wifi because i have tried several different ones and its always the same slow speeds, ive gone over my data limit twice since i got the g4 because cant you wifi.
is their a fix for this iissue, love my g4 but seriously thinking about another device

bayniner said:
Hey guys am i the only one having issues with wifi, its so painfully slow takes forever to load a webpage forget about watching a video, and no its not my wifi because i have tried several different ones and its always the same slow speeds, ive gone over my data limit twice since i got the g4 because cant you wifi.
is their a fix for this iissue, love my g4 but seriously thinking about another device
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Try the DNSet application - I had painful Comcast WiFi speeds, or lack thereof, and running this application before turning on WiFi solves the issue. Not sure if it's just me, but you should know that MMS doesn't work when the DNSet application is running.

What is stopping us from hardcoding DNS entries in the WLAN config now that we have root? Is this possible?

Icculus760 said:
Try the DNSet application - I had painful Comcast WiFi speeds, or lack thereof, and running this application before turning on WiFi solves the issue. Not sure if it's just me, but you should know that MMS doesn't work when the DNSet application is running.
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Click to collapse
I looked at it, but the app needs to create a VPN to work, which is a whole other can of worms.

Do you have Comcast? I've learned that Comcast rolled out IPv6 out of nowhere, and many of its routers have issues with some phones (my gf's iphone included). I rooted my phone, disabled IPv6, and now I'm back to consistent 50-80Mbps download speeds on my phone.
Before, I would open up the Speedtest.net app, it would take a full minute or more to locate a server, and then the needle for the download speeds would constantly bounce between 0 and 50, sometimes with my phone prompting me that I lost my internet connection, asking if I would like to switch to data. Worth a shot! If you can't root, DNSet does this for you through the VPN, or you might be able to find a way to shut it off on your router.
I don't seem to have any issues with my phone picking up IPv6 over data or a few other routers, though, so I think this issue is more due to some bad firmware on certain modems.

Yes i do have comcast, their is many other cellphones in my house galaxy s5 ,s6, lg g3, iphone 6, none of them have problems but mine, how do i disable IPv6 once i have root

ryanpm40 said:
Do you have Comcast? I've learned that Comcast rolled out IPv6 out of nowhere, and many of its routers have issues with some phones (my gf's iphone included). I rooted my phone, disabled IPv6, and now I'm back to consistent 50-80Mbps download speeds on my phone.
Before, I would open up the Speedtest.net app, it would take a full minute or more to locate a server, and then the needle for the download speeds would constantly bounce between 0 and 50, sometimes with my phone prompting me that I lost my internet connection, asking if I would like to switch to data. Worth a shot! If you can't root, DNSet does this for you through the VPN, or you might be able to find a way to shut it off on your router.
I don't seem to have any issues with my phone picking up IPv6 over data or a few other routers, though, so I think this issue is more due to some bad firmware on certain modems.
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From the G3 after the 5.0 update, the fix was to disable IPv6 as well. This isn't related to IPv6 though, as it only seems to effect the G3/G4. Also, Google "What is my IP" when on mobile data and you will likely have an IPv6 address from Verizon.

I don't know that it isn't related to ipv6; Samsung phones have similar issues and my girlfriend's iphone does as well. I don't think the problem is the protocol itself, but how certain modems (seemingly Comcast ones) incorrectly implement them in their firmware

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.
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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!
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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.
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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!

Question WiFi problems - Do others see them too?

Hello Folks,
In summary, the WiFi stack on OnePlus 11 is quite unstable compared to other smartphones (that are also based on Qualcomm SoC with built-in modems).
First off, I've two 802.11 AC (WiFi 5) routers. Compared to my Asus (ROG 5) and Motorola (Moto G 5G Plus) phones, I've noticed that my new OnePlus has better reception for both mobile and WiFi networks. E.g., at the same location where ASUS has say -30db signal, OnePlus 11 shows -27 or -28db. So performance wise, it's fantastic, however, stability of WiFi connectivity is subpar. Between performance and stability, obviously I always prefer stability. I've up-to-date OnePlus 11 CPH2449 device (CPH2449_11_A.08).
I've been using the phone for about 5 days & these are the three distinctive WiFi problems with OnePlus 11 that I've observed in that duration:
1. WiFi dieing silently:
I've seen many times that all of a sudden the WiFi symbol will disappear. Then checking the status of the connectivity will show that it had silently dropped/died. Sometimes, it'll reconnect on its own within 10 odd seconds. When it doesn't, then toggling WiFi off and then on may help. When even that doesn't help, then toggling airplane mode on and then off becomes necessary/only-way to re-establish the connection. During these episodes, the phone is barely 2 metres away from the routers with a clear/unobstructed line of sight with them. Needless to say, neither ASUS nor Moto exhibit this problem while these episodes are playing out with OnePlus 11.
2. VoWiFi dieing silently:
While operating the phone (non-phone-call situations), a number of times I've seen that the VoWiFi logo would drop and VoLTE logo would appear. Interestingly enough, within a matter of 10+ odd seconds, it'd re-establish the VoWiFi connectivity on its own.
3. WiFi not roaming efficiently:
When moving faraway from one router and close to another, it doesn't roam to the closest one, instead holding onto the furthest one. But putting the phone down for say a minute with the screen off, triggers the roaming to the closest router! WiFi assistant neither helps nor hinders this behaviour.
In short, it'd seem the whole WiFi stack is riddled with stability issues. I've done "Reset Network settings", which didn't help with those issues.
Am I the only one facing these issues?
Thanks for any help/guidance.

Wifi Issue
Anyone have wifi dropping off and reconnecting after flashing to oxygen os? I seem to keep experiencing this. Anyone have any fix?
forum.xda-developers.com

No issues with Wifi.
Just downloaded over 130GB over Wifi and ftp server on the phone without a single interruption. Took over 3 hours and no problem.

I have similar issues. My wifi will randomly drop out and then pick up again in that time sometimes it will say internet offline. I've been noticing it the last week or so when that happens.

I've escalated my problems to OnePlus support. After a number of discussions, I think we got the winner: Disabling ipv6 in my WiFi network seems to stabilise it!
I've been trying this only for the past few hours, but it's proving positive so far. Still I'd prefer to test this over at least a day or two.

I've had WiFi just stop working finds no networks. Even turning the toggle off and back on again doesn't work. But after a reboot works fine again. Mines a euro model on fw09

sutt359 said:
I've had WiFi just stop working finds no networks. Even turning the toggle off and back on again doesn't work. But after a reboot works fine again. Mines a euro model on fw09
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I've seen similar behaviour. Turning flight mode on and then off helped me on those circumstances. Mine too EU version CPH2449.
Now, if the root cause is identified and addressed, then it ought not to even regularly disconnect from WiFi in the first place, so subsequent problems like reconnection issues can be avoided then.
Disabling ipv6 has proven to be a good workaround for vastly improving my phone's WiFi stability. Of course, they need to identify and resolve the problem that's making WiFi & ipv6 incompatible though.