Database Develop

Android 5 Lollipop Wifi Bug fix

Hey guys I had this bug earlier today, here is how I fixed it. Fairly strait forward change your wifi channel to anything other than 12 or 13. Video below if you need it.:

I just saw your video but I think the problem im facing is that too many wakelocks thats draining my battery.
Also im an old follower to your youtube channel your work is great

anshmiester78900 said:
I just saw your video but I think the problem im facing is that too many wakelocks thats draining my battery.
Also im an old floower to your youtube channel your work is great
Click to expand...
Click to collapse
Thanks m8, all my nexus devices are having wifi issue with anything above channel 11, really odd bug can cant get 5G working at all so no AC currently.
Such a strange little bug.

I'm having problems connecting to a Channel 11 WiFi that I don't have to its configuration. This happened since the L Developer Preview and is still there after the 5.0 release.
However, it worked perfectly fine on versions 4.4.4 and older!

A bug report is here.

androidizen said:
cant get 5G working at all so no AC currently.
Click to expand...
Click to collapse
Got AC working fine here, AP is a Xirrus XR620

androidizen said:
Hey guys I had this bug earlier today, here is how I fixed it. Fairly strait forward change your wifi channel to anything other than 12 or 13. Video below if you need it.:
Click to expand...
Click to collapse
Thanks, I was on the point of rolling back to 4.4.4 as I wasn't able to get wifi to work again, other than from Safe mode.
However it seems to be working now that I've shifted my channel from 13 to 8

I have the same problem here, finally i'm not the only one having this issue. Fixed after changing Wireless Channel number to 11 from 13 and i'm not sure if this is also related with Wifi drain bug.

Has no one tried:
settings put secure wifi_country_code UK
I'm not in the UK so I can't test but...

Has anyone tried the 5ghz channels? I'm testing on my Shield tablet and I can only see channels 36-44, whereas with Kitkat all the channels were accessible. I've started a thread here http://forum.xda-developers.com/shi...less-detection-lollipop-t2945899#post56965354
toastgodsupreme said:
Has no one tried:
settings put secure wifi_country_code UK
I'm not in the UK so I can't test but...
Click to expand...
Click to collapse
Can you explain where that code should be used? and what it will do?

ClownShoes said:
Has anyone tried the 5ghz channels? I'm testing on my Shield tablet and I can only see channels 36-44, whereas with Kitkat all the channels were accessible. I've started a thread here http://forum.xda-developers.com/shi...less-detection-lollipop-t2945899#post56965354
Can you explain where that code should be used? and what it will do?
Click to expand...
Click to collapse
You run the code in terminal or some other app that passes shell commands.
What it does: https://www.google.com/search?clien...&sa=X&ei=ofRwVLjmAozOaJ6hgJgM&ved=0CB0QvgUoAQ

My wifi won't even turn on it just says turning on and doesn't actually turn on! Will changing the channels help that! I am not rooted!
Sent from my Nexus 5 using XDA Free mobile app

I'm also facing a problem with wifi on my Nexus 5 (D821) with Android 5.0.
I can't connect to my wifi repeater TP-LINK TL-WA850RE, the device says it's connected but shows that "!" sign.
I don't know if it has something to do with wifi channels, since the repeater works fine on another devices running Android 4.4.4 and Windows, PCs, etc.
Don't know if it's another wifi bug on Lollipop or what.

vinicius.rodsilva said:
I'm also facing a problem with wifi on my Nexus 5 (D821) with Android 5.0.
I can't connect to my wifi repeater TP-LINK TL-WA850RE, the device says it's connected but shows that "!" sign.
I don't know if it has something to do with wifi channels, since the repeater works fine on another devices running Android 4.4.4 and Windows, PCs, etc.
Don't know if it's another wifi bug on Lollipop or what.
Click to expand...
Click to collapse
Having the exact same problem. Tempting to go back to 4.4.4 until this is fixed!

smithey253 said:
Having the exact same problem. Tempting to go back to 4.4.4 until this is fixed!
Click to expand...
Click to collapse
Try just flashing the kk radio. This has worked for several people.

Not rooted ATM but that's one option I'm considering! Cheers

Am I the only one facing the following issue; in my battery stats, WiFi is shown as always on. Now, I turn my WiFi off when I leave for work and WiFi scanning always available has been turned off. Why does it still show my WiFi as on?

DeadSOL said:
Am I the only one facing the following issue; in my battery stats, WiFi is shown as always on. Now, I turn my WiFi off when I leave for work and WiFi scanning always available has been turned off. Why does it still show my WiFi as on?
Click to expand...
Click to collapse
Nope, you are not the only one, I have the same problem. I actually did a clean install of Lollipop, it was terrible. Battery pretty much drained in about 8 hours with less than an hour of screen on time. I have reinstalled again (this time installed 4.4.4 and then doing an OTA). Lets see how that fares. Overnight, with minimal apps running I got from 97% to about 74% (7 hours) with wifi off, but in battery stats wifi is being shown as on.

DeadSOL said:
Am I the only one facing the following issue; in my battery stats, WiFi is shown as always on. Now, I turn my WiFi off when I leave for work and WiFi scanning always available has been turned off. Why does it still show my WiFi as on?
Click to expand...
Click to collapse
Do you use Viber?
Sent from my Nexus 5 using XDA Free mobile app

MrObvious said:
Do you use Viber?
Sent from my Nexus 5 using XDA Free mobile app
Click to expand...
Click to collapse
Yup!
Is that it? Is Viber the demon that is sucking my battery life?

Potential slow WiFi speed fix

Hi all,
Before I get started I will say that I just so happened to test this method out and it worked for my problem specifically so it may not be the all WiFi fixing source you are looking for. Second, I'm no developer or programmer, I simply found an old thread, tested, and wanted to share. Let's get started.
Symptoms:
My home internet is 150/150 Mbps download and upload speed. The 5 GHz network always had the full 150 download but upload would be around 5 or 6 (rarely 150) regardless if I forced the 5 GHz connection only. At work on 2.4 GHz I would have much poorer WiFi signal strength than my old OnePlus One. At home my 2.4 GHz connection was very much a hit or miss -I believe this is similar to what many others have felt and the recommended fix is to force the 2.4 GHz connection. An interesting tidbit is when I used my VPN (PIA) the upload speed jumped up to nearly full speed, which made me think this is not a hardware related issue.
Potential fix:
I dug up an old OnePlus 2 article on XDA located here (and specifically page 2): https://forum.xda-developers.com/oneplus-2/general/fix-wifi-mm-based-roms-t3344190/page2
I took the WCNSS.zip, unzipped the WCNSS_qcom_cfg.ini file and replaced the file in system\etc\wifi. Please make a backup of your original but you should also note you can easily re-install it. Also note that this requires root. After doing that I rebooted my phone and my connection speeds at home have been great. It's the weekend so I haven't tested signal strength at work but I know I can adjust the Txpower value slightly and hope it doesn't overheat.
If it matters I am also using the ElementalX kernel with the Westwood TCP congestion algorithm. I also changed the gChannelBondingMode24GHz=1 which is actually not included in Oxygen OS 4.5.5. FWIW I tried to add that line in to the original file and there was no change.
TL;DR Root required. Download OP2 WCNSS.zip from here: https://forum.xda-developers.com/oneplus-2/general/fix-wifi-mm-based-roms-t3344190/page2
Replace the WCNSS_qcom_cfg.ini file located in system\etc\wifi. Reboot.
My last words for this post is that I don't know what effect or effects this may have but I wanted to do something about this issue on my own. Not sure if this helps anyone or not but it helped me so I thought I would share.
EDIT:
I found that changing the two values located near the bottom of the WCNSS_qcom_cfg.ini file for the OP5's original data got me the same results:
TSOEnable=1 to 0 -this is the TCP Offload which seems to change large amounts of network data into smaller bits. This doesn't work for my network apparently so disabling it helped my speed.
gChannelBondingMode24GHz=1 -add this in for wideband support (ie your 2.4GHz network on 40Hz)
gEnableWoW=3 -this is "commented" out with #, so remove that and set this value to 3. This has worked for some for stability and speed.
gEnableIpTcpUdpChecksumOffload=1 *I had this value at 0 but there is no effect for me changing it to 0 so leave it at 1 (default).
Edit 2 (Aug 12): I see that Qualcomm provides the WiFi so I took the WiFi folder from an HTC U11. I still found my upload to be slow so I changed TSOEnable=0 again and so far things have been good -I changed no other values. The wpa_supplicant_overlay.conf and wpa_supplicant.conf are slightly different than the stock OnePlus 5 files so I would recommend replacing the entire folder's contents to test.
https://drive.google.com/open?id=0By0BkGnCgaRUWWo2Q283STJhQ0k I uploaded it here.
OxygenOS 4.5.10 - WiFi fix seems to be fixed! There was an IPv6 issue with Snapdragon 835 (or so I was told by OnePlus).

darkdragon88 said:
Hi all,
Before I get started I will say that I just so happened to test this method out and it worked for my problem specifically so it may not be the all WiFi fixing source you are looking for. Second, I'm no developer or programmer, I simply found an old thread, tested, and wanted to share. Let's get started.
Symptoms:
My home internet is 150/150 Mbps download and upload speed. The 5 GHz network always had the full 150 download but upload would be around 5 or 6 (rarely 150) regardless if I forced the 5 GHz connection only. At work on 2.4 GHz I would have much poorer WiFi signal strength than my old OnePlus One. At home my 2.4 GHz connection was very much a hit or miss -I believe this is similar to what many others have felt and the recommended fix is to force the 2.4 GHz connection. An interesting tidbit is when I used my VPN (PIA) the upload speed jumped up to nearly full speed, which made me think this is not a hardware related issue.
Potential fix:
I dug up an old OnePlus 2 article on XDA located here (and specifically page 2): https://forum.xda-developers.com/oneplus-2/general/fix-wifi-mm-based-roms-t3344190/page2
I took the WCNSS.zip, unzipped the WCNSS_qcom_cfg.ini file and replaced the file in system\etc\wifi. Please make a backup of your original but you should also note you can easily re-install it. Also note that this requires root. After doing that I rebooted my phone and my connection speeds at home have been great. It's the weekend so I haven't tested signal strength at work but I know I can adjust the Txpower value slightly and hope it doesn't overheat.
If it matters I am also using the ElementalX kernel with the Westwood TCP congestion algorithm. I also changed the gChannelBondingMode24GHz=1 which is actually not included in Oxygen OS 4.5.5. FWIW I tried to add that line in to the original file and there was no change.
TL;DR Root required. Download OP2 WCNSS.zip from here: https://forum.xda-developers.com/oneplus-2/general/fix-wifi-mm-based-roms-t3344190/page2
Replace the WCNSS_qcom_cfg.ini file located in system\etc\wifi. Reboot.
My last words for this post is that I don't know what effect or effects this may have but I wanted to do something about this issue on my own. Not sure if this helps anyone or not but it helped me so I thought I would share.
Click to expand...
Click to collapse
Keen to know what you've experience since changing

benc88 said:
Keen to know what you've experience since changing
Click to expand...
Click to collapse
I've spent the majority of my day trying to use the original OP5 WCNSS_qcom_cfg.ini and find out what made this work for me and I think I did. I put it in my first post but the main part is I think disabling gEnableIpTcpUdpChecksumOffload and TSOEnable helped me reach my speeds. Everything has been pretty good so far in terms of speed. I walked around to each corner of my house and had twitch streams going the entire time on 2.4GHz.
On my personal home network I find that going from one AP to another results in a slow transfer rate for a little bit. I think that is the gActiveMaxChannelTime value but I can live with that.

I get close to 600 mbits on my wifi 5GHZ... i guess teh phone is working just fine!

Qualcomm released a new wifi driver recently. It's in the Revan kernel v15. I've personally never had issues with WiFi I, but I wonder if the new driver could help. Feel free to give the kernel a test drive.

I haven't had any issues, my speed are over 100 on 5GHZ network:good:

swhtownboy said:
I haven't had any issues, my speed are over 100 on 5GHZ network:good:
Click to expand...
Click to collapse
Thanks

Binary Assault said:
Qualcomm released a new wifi driver recently. It's in the Revan kernel v15. I've personally never had issues with WiFi I, but I wonder if the new driver could help. Feel free to give the kernel a test drive.
Click to expand...
Click to collapse
If I could navigate that kernel sharing drive I would try it out for sure. I guess I'll hope OnePlus includes this in their next update.

mikelsantanen said:
I get close to 600 mbits on my wifi 5GHZ... i guess teh phone is working just fine!
Click to expand...
Click to collapse
Do you mean on actual speed tests, or is that the association rate? I associate at 866Mbps but this is about the max speed I can pull on a speed test:

swhtownboy said:
I haven't had any issues, my speed are over 100 on 5GHZ network:good:
Click to expand...
Click to collapse
geoff5093 said:
Do you mean on actual speed tests, or is that the association rate? I associate at 866Mbps but this is about the max speed I can pull on a speed test:
Click to expand...
Click to collapse
Unless you two have tweaked your settings in a way that can help those who have had slow WiFi issues I would suggest taking your discussion elsewhere.

darkdragon88 said:
Unless you two have tweaked your settings in a way that can help those who have had slow WiFi issues I would suggest taking your discussion elsewhere.
Click to expand...
Click to collapse
Well I'm running ElementalX kernel. Its from people sharing experiences and what they're running that we can hopefully narrow down a fix.
Sent from my ONEPLUS A5000 using Tapatalk

Not sure what the issue is - my 5GHz speed is just fine

darkdragon88 said:
Unless you two have tweaked your settings in a way that can help those who have had slow WiFi issues I would suggest taking your discussion elsewhere.
Click to expand...
Click to collapse
No tweaks completely stock

geoff5093 said:
Do you mean on actual speed tests, or is that the association rate? I associate at 866Mbps but this is about the max speed I can pull on a speed test:
Click to expand...
Click to collapse
It's actually speed!
That result was a bit lower than usual because i have more than 10 devices connect to the router and netflix pumping...
(I have 1GB internet connection)

mikelsantanen said:
It's actually speed!
That result was a bit lower than usual because i have more than 10 devices connect to the router and netflix pumping...
(I have 1GB internet connection)
Click to expand...
Click to collapse
Where is the server you connect to? It's extremely strange you get 1ms ping on wifi.
Sent from my ONEPLUS A5000 using Tapatalk

geoff5093 said:
Where is the server you connect to? It's extremely strange you get 1ms ping on wifi.
Sent from my ONEPLUS A5000 using Tapatalk
Click to expand...
Click to collapse
There is nothing strange... i connect to the server located in the same city and same internet provider.
It's a know fact that the internet connections in Finland are top-notch and the infrastruture over-dimensioned. Also, i have a good router.
Do you think i would even waste my time trying to forge the results??? I have more important things to do in life

mikelsantanen said:
There is nothing strange... i connect to the server located in the same city and same internet provider.
It's a know fact that the internet connections in Finland are top-notch and the infrastruture over-dimensioned. Also, i have a good router.
Do you think i would even waste my time trying to forge the results??? I have more important things to do in life
Click to expand...
Click to collapse
Lol it's about wifi in general, I've never seen that low latency even when pinging your WiFi router.
Sent from my ONEPLUS A5000 using Tapatalk

geoff5093 said:
Lol it's about wifi in general, I've never seen that low latency even when pinging your WiFi router.
Sent from my ONEPLUS A5000 using Tapatalk
Click to expand...
Click to collapse
I was 4 meters from the router

mikelsantanen said:
I was 4 meters from the router
Click to expand...
Click to collapse
Doesn't matter lol. Probably just the app being weird
Sent from my ONEPLUS A5000 using Tapatalk

geoff5093 said:
Doesn't matter lol. Probably just the app being weird
Sent from my ONEPLUS A5000 using Tapatalk
Click to expand...
Click to collapse
I get those values with my iphone, ipad, apple tv 4G and mac mini. 1s-2s ping

XZ2 (H8296) Wi-fi problem

Hello! So I have a very strange (and annoying) wifi problem with my phone. The signal tends to drop even though it is at moderate strength... For example, I currently have a OnePlus 5t and the XZ2. However, when I walk into a room down the hall from where my router is, my OnePlus still receives a stable wifi connection (although at half speed). My XZ2 ALSO receives the same strength of wifi HOWEVER any time i perform a speed test or start a netflix video or watch youtube, the speed of the wifi on the XZ2 gradually but quickly goes down and then the wifi disconnects which leaves me on data. Autonetwork switch is turned off. This problem has become very annoying as I can no longer stream netflix in bed and I don't want to have to return this phone simply because of this very jank wifi issue. The only time I seem to be able to get a stable wifi connection is when I am in the same room as the router. Every other device in my apartment connects to the router just fine. I have tried rebooting the router and rebooting my phone.
I have also tried software repairing the phone to no avail... Maybe this is just a problem with bad hardware?

May you want to reinstall the system with the newflasher including a fullwipe.
Or may you want to use the H8266 firmware?
I use the German H8266 firmware on my h8296 without WiFi problems.

MartinX3 said:
May you want to reinstall the system with the newflasher including a fullwipe.
Or may you want to use the H8266 firmware?
I use the German H8266 firmware on my h8296 without WiFi problems.
Click to expand...
Click to collapse
What is the new flasher? I used sony xperia companion. And, I will try to install the h8266 firmware now. Where can I find it?

jondo24 said:
What is the new flasher? I used sony xperia companion. And, I will try to install the h8266 firmware now. Where can I find it?
Click to expand...
Click to collapse
Use xperifirm from XDA
It will download the firmware for you
The newflasher from XDA will flash it for you
You only need to put the newflasher file into the firmware folder downloaded by xperifirm.
You don't need an unlocked bootloader.
And it will remove your apps, you may want to use Google backup.

MartinX3 said:
Use xperifirm from XDA
It will download the firmware for you
The newflasher from XDA will flash it for you
You only need to put the newflasher file into the firmware folder downloaded by xperifirm.
You don't need an unlocked bootloader.
And it will remove your apps, you may want to use Google backup.
Click to expand...
Click to collapse
Alright! I'll report back. I'm downloading the h8266 for the USA. Hopefully it works

MartinX3 said:
Use xperifirm from XDA
It will download the firmware for you
The newflasher from XDA will flash it for you
You only need to put the newflasher file into the firmware folder downloaded by xperifirm.
You don't need an unlocked bootloader.
And it will remove your apps, you may want to use Google backup.
Click to expand...
Click to collapse
I flashed the h8266 usa android 9 firmware and the problem was not fixed... Still same issue. Phone says the connection is pretty good (only one bar missing), then whenever I actually use the internet, speed diminishes and eventually loses connection from the router.
EDIT: it says for some reason the network is "disabled" on my phone

Does it happen with different Wi-Fi's?
Since pi I can't hear Bluetooth audio without stuttering on my old company ThinkPad t440p with Bluetooth 4.0.
While my old ThinkPad t460p with Bluetooth 4.1 is fine.
There wasn't any problems in Oreo.

MartinX3 said:
Does it happen with different Wi-Fi's?
Since pi I can't hear Bluetooth audio without stuttering on my old company ThinkPad t440p with Bluetooth 4.0.
While my old ThinkPad t460p with Bluetooth 4.1 is fine.
There wasn't any problems in Oreo.
Click to expand...
Click to collapse
My router has a 5.0 and 2.4 ghz setting. Both are affected by this issue. The phone doesn't disconnect from other routers I've encountered but its hard to recreate the same circumstances to match the situation of my apartment.
The peculiar thing is that when scanning, the networks still show up. But, for whatever reason, after connecting and using the internet for like, 5 seconds, it would disconnect itself even though the signal is ok (not full but definitely strong enough....). After it disconnects, the network will still show up on the scan and I can reconnect for it to work for 5 more seconds.
EDIT: Also, no other phones are effected by this problem. Not even my roommate's older phone. It is only my XZ2...

jondo24 said:
My router has a 5.0 and 2.4 ghz setting. Both are affected by this issue. The phone doesn't disconnect from other routers I've encountered but its hard to recreate the same circumstances to match the situation of my apartment.
The peculiar thing is that when scanning, the networks still show up. But, for whatever reason, after connecting and using the internet for like, 5 seconds, it would disconnect itself even though the signal is ok (not full but definitely strong enough....). After it disconnects, the network will still show up on the scan and I can reconnect for it to work for 5 more seconds.
EDIT: Also, no other phones are effected by this problem. Not even my roommate's older phone. It is only my XZ2...
Click to expand...
Click to collapse
Also worth noting that this only happens when there is my bedroom wall in the way. If the phone and the router are in the same room, then everything works perfectly.

I'm in my room too and I don't have any dropping

silveraero said:
I'm in my room too and I don't have any dropping
Click to expand...
Click to collapse
Very strange... perhaps it could be an app I have installed? However, none of them should affect the wifi...

Quick update. It does appear to only happen with my router... When the wifi signal is weak on other routers, my phone stays connected. However, when it is on my specific router at home, a moderately strong signal is enough for it to drop.

jondo24 said:
Quick update. It does appear to only happen with my router... When the wifi signal is weak on other routers, my phone stays connected. However, when it is on my specific router at home, a moderately strong signal is enough for it to drop.
Click to expand...
Click to collapse
Maybe you want to look into the router settings and only enable the newest 2.4ghz technology.
https://turbofuture.com/computers/Things-you-mustwant-to-know-about-WIFI

I just tried that and it didn't work... I'm about ready to give up on this phone to be honest. This is the only device that has this issue in our apartment and we have over 20 devices. It's just weird the phone stays connected until I actually want to use the internet.

jondo24 said:
I just tried that and it didn't work... I'm about ready to give up on this phone to be honest. This is the only device that has this issue in our apartment and we have over 20 devices.
Click to expand...
Click to collapse
Which hardware revision do you own?
Should be on the package.
Did you contact Sony support?
I did it with my Bluetooth pie problem, told them Bluetooth 4.0 is not stable anymore.
How old is your router?
My Fritzbox 7170 and Fritzbox 7490 are working fine.
Did you change the wifi frequency to an unused one?

MartinX3 said:
Which hardware revision do you own?
Should be on the package.
Did you contact Sony support?
I did it with my Bluetooth pie problem, told them Bluetooth 4.0 is not stable anymore.
How old is your router?
My Fritzbox 7170 and Fritzbox 7490 are working fine.
Click to expand...
Click to collapse
My router is brand new. It's a tenda ac19. I have not yet contacted Sony support (which is probably what I should have done first) and hardware revision 3

jondo24 said:
My router is brand new. It's a tenda ac19. I have not yet contacted Sony support (which is probably what I should have done first) and hardware revision 3
Click to expand...
Click to collapse
I am a jealous, because I've got revision 2.
I only find the AC15 & AC18

Maybe you just try to disconnect some devices and try your phone first. The router may not handle so many connections like that.

MartinX3 said:
I am a jealous, because I've got revision 2.
I only find the AC15 & AC18
Click to expand...
Click to collapse
My bad yeah it's the ac18
And yeah I've tried disconnecting devices too.

Question Wi-Fi stability issues

Even with the latest update as of May 2022, my new Tab A8 exhibits Wi-Fi stability issues not seen on the old Tab A7.
After leaving a connected tablet to sleep, Wi-Fi for some apps won't work and only a WiFi OFF + WiFi ON reset will restore connectivity.
Anyone else encountered this problem?

Same - it just won't stay on any network for long at all. It won't connect at all to my VirginMedia router saying 'couldn't get ip number'

Doesn't happen to me from what I've seen... Have Xfinity cable internet together with a Netgear router/modem.
Have you guys done all the system updates?

Yup, up to the latest from April. Tested on 2 devices and it's the same. Factory reset doesn't help.
I'm hoping that if not before, at least the Android 12 update will resolve this.

I just updated to Android 11 firmware update from last week - X200XXU1AVG1 - but the issue remains the same

On Build number RP1A.200720.012.X200XXU1AVC1, no updates I'm aware of. When this happens to me and I toggle wifi off and back on, no networks display. If I toggle airplane mode it they will appear again.
II'm in the USA, using an asus blue cave router.
What's everyone else using?
Anyone know what wifi chipset this tablet uses?

Got the update to Build number RP1A.200720.012.X200XXU1AVG1 it still occurs, and I'm also noticing bluetooth connection issues, both are cured by cycling airplane mode on and off.

Yeah... let's hope Android 12 includes fixes for this... really, the Tab A7 was a much better device with a nicer screen

KoMarCek said:
Yeah... let's hope Android 12 includes fixes for this... really, the Tab A7 was a much better device with a nicer screen
Click to expand...
Click to collapse
I reported the issue via Samsung members app with a bunch of screenshots,

SM-X205 is now getting Android 12 but nothing available yet for SM-X200. Will probably take a couple more days

OK now SM-X200 also got the first Android 12 update and the results are... BAD! Still the same issue and I'm quite done with Samsung for now. Unbelievable that they do not test the basic functionality well enough. I expected some WiFi driver updates under the hood but it seems they are oblivious to the fact Tab A8 has issues.

Had the issue one time since the 15th it's not solved but less frequent at least

What I notice now is that the wifi will turn off randomly. If turned back on it reconnects but shortly thereafter bluetooth dies and cycling airplane mode is required

Question Redmi Note 11 Bluetooth interferes with Wifi

Redmi Note 11
For the past three months, I am facing this odd situation where as soon as I turn Bluetooth on, the wifi disconnects. I have tried everything that I learned from Google and even reset my phone twice, but no solution so far. I have tried 5GHz wifi but still the same issue. I cannot use Bluetooth headphones or connect my phone to the laptop or smart watch while connected to wifi. I bought this phone in February 2022. It worked fine for a month and then this problem started. Please help.
Model 2201117TG
MIUI Global 13.0.15.0 Stable (RGCMIXM)
Android Version 11 RKQ1.211001.001

If you haven't physically damaged your smartphone, then my guess is that you are experiencing a software (driver) problem -- in that case you have 2 options:
report this issue to Xiaomi & wait for the next MIUI release,
install (after unlocking the bootloader) a custom ROM (replacing MIUI) -- you can choose whichever you like:
Redmi Note 11 Updates
Redmi Note 11 Updates Main group: @RedmiNote11_Community Off-topic group: @XiaomemeOT Photography group: @XiaomemePhotography
t.me

a custom rom won't fix it i guarantee it , its a hardware issue . ive had the same problem with various devices over the years , phones , tables and laptops . the wifi and bluetooth signals interfere with each other . try putting your wifi on 2.4ghz bands b / g and see if it helps

I tested your issue twice just now. Connected the phone to a 5Ghz Wi-Fi then turned on the Bluetooth, after that I it paired with a sound system. The Wi-Fi never disconnected during the process. Maybe you have too many wireless devices in your area. Do more tests in a different location. Try flashing a different version of MIUI global if the issue persists.

S
neo4u44 said:
Redmi Note 11
For the past three months, I am facing this odd situation where as soon as I turn Bluetooth on, the wifi disconnects. I have tried everything that I learned from Google and even reset my phone twice, but no solution so far. I have tried 5GHz wifi but still the same issue. I cannot use Bluetooth headphones or connect my phone to the laptop or smart watch while connected to wifi. I bought this phone in February 2022. It worked fine for a month and then this problem started. Please help.
Model 2201117TG
MIUI Global 13.0.15.0 Stable (RGCMIXM)
Android Version 11 RKQ1.211001.001
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Same Problem i face last 3 month... But today after uninstall smartwatch app this problem is solve... please try at your phone and inform me the result. Thanks.

Same Problem i face last 3 month... But today after uninstall smartwatch app this problem is solve... please try at your phone and inform me the result. Thanks.

Obi_Wlan said:
I tested your issue twice just now. Connected the phone to a 5Ghz Wi-Fi then turned on the Bluetooth, after that I it paired with a sound system. The Wi-Fi never disconnected during the process. Maybe you have too many wireless devices in your area. Do more tests in a different location. Try flashing a different version of MIUI global if the issue persists.
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Tried every solution, including moving Wi-Fi to 5GHz, but the problem still persists.

Swapon88 said:
Same Problem i face last 3 month... But today after uninstall smartwatch app this problem is solve... please try at your phone and inform me the result. Thanks.
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Surprisingly your suggested solution was spot on. I had two smartwatch apps on my phone (one for Haylou, and the other for the Mibro smartwatch). I uninstalled both, restarted my phone and turned on both bluetooth and wifi. No more disconnection issue. Now have to figure out which app is actually causing the problem. Before your reply, I posted my problem on many forums and searched google, but no effective solution till your reply. Thank you very much.

Obi_Wlan said:
I tested your issue twice just now. Connected the phone to a 5Ghz Wi-Fi then turned on the Bluetooth, after that I it paired with a sound system. The Wi-Fi never disconnected during the process. Maybe you have too many wireless devices in your area. Do more tests in a different location. Try flashing a different version of MIUI global if the issue persists.
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Thank you for your reply, brother. But how can you test my issue when you don't have the problem in the first place? Regardless of which network I am using (home, office, friend's house) and on which band I am (2.4 or 5.0 GHz), as soon as I turned on the Bluetooth, wifi disconnects. Swapon88's suggestion really worked. It was the smartwatch app.

neo4u44 said:
Surprisingly your suggested solution was spot on. I had two smartwatch apps on my phone (one for Haylou, and the other for the Mibro smartwatch). I uninstalled both, restarted my phone and turned on both bluetooth and wifi. No more disconnection issue. Now have to figure out which app is actually causing the problem. Before your reply, I posted my problem on many forums and searched google, but no effective solution till your reply. Thank you very much.
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Alhamdulillah, happy to hear that.

Brilliant. I was having this issue and uninstalled "da fit" app and it's fine now. Thanks

I am also facing a similar issue. When I am connected to Wifi and Bluetooth simultaneously, wifi disconnects after a few minutes and no Access points shows up in the available networks section. Wifi reconnects when bluetooth is turned off.
I dont have any smartwatch app installed.
MIUI Global 13.0.11
Android 11
Model 2201117TI

I think it's common problem when connecting to a 5GHz Wi-Fi and using Bluetooth at the same time, it kept happening to my RN9 too

hadrbass89 said:
I think it's common problem when connecting to a 5GHz Wi-Fi and using Bluetooth at the same time, it kept happening to my RN9 too
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Yup, that seems to be the case. Can confirm such 'issues' happened on my moto g3, moto g5 plus, rn8 too because of interfering frequencies that causes either Bluetooth or wifi to disconnect (shortly).