yashsingh1/xdaforums huggingface dataset:
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] Segadorn:
I have buyed the new released Xiaomi Redmi Note 9S and i have problems with the Wifi. When you let the device to sleep for few hours wifi stops working. When turning on the phone from sleep the wifi dont work and you have to turn the wifi off and on to restore it, then i receive all the messages at once when the apps (Line, Whatsapp, etc) reconnect to inet. It seens to happen only if the device is sleep for few hours. If is only sleep for few minutes it works ok. Anyone experienced this issue, knows how to solve it?
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] cimdrap:
I noticed strange wifi behaviors too
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] ov2rey:
I also encounter same issue...
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] wjzhweo:
please advise your rom version.

my device does not get that's problem

11.0.1 global

11.0.3 india global

11.0.5 india global
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] Zasnizas:
I have used my RMN9S more than a week ago and I don't have any issue with WiFi. My device connect to WiFi almost 24/7 without any problem. BTW mine 11.0.3 global
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] Segadorn:
Mine is 11.0.3 global. When i awaked this morning and checked the phone it was working ok. No problems at all after all night in sleep mode. I am puzzled. I hope it was a "one" time fault and it works from now on. I come again if i have news.
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] cimdrap:
Just got the wifi connected without internet... Had to disable and renable
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] DjXavy:
This also happens to my Redmi Note 9S.

It happens with all current ROMs. I experienced it with global, indian and eu ROMs.

Its also random, it does not happen after x hours. Sometimes its just 1 hour, others is 7 hours, others it does not happen.

What I do:

I turn off the smartphone screen to sleep, with wifi on. AC connected.

I have some apps reading internet data every 2 minutes.

When I wake up, I see the wifi icon connected. But Internet doesn't work.

When I look at the apps, I can see that they stopped accessing internet at a random time in the night.

If I turn wifi off and on, internet works again.

It doesn't happen with wifi off and mobile data connection on.

I tried changing some values in dev settings. Also in battery settings. Nothing has worked yet.

With normal day usage, it can also happens, if the screen is off a few hours.

It not a router wifi issue. My old note 3 worked fine with the same wifi. My wife's redmi note 8 pro works fine too.

It can be something related to battery saving. But so far I have been unable to fix if.

It never happens with screen on, or with screen off for a few minutes.

So I dont think its a hardware issue, I think its software-related.
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] Segadorn:
Thank you DjXavy, your post is perfect to describe my issues. As anyone triying to contact Xiaomi about this problem? Are they even aware of it?
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] Urmelausmall:
-deleted-
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] DjXavy:
It could be a drivers or firmware problem. Xiaomi should be able to fix it.

What can we do:

1) If it happens to you too, please report it here and give details if you can. That way, Xiaomi can evaluate how common the problem is.

2) While it get fixed: Do someone know an app, or can build one, that check every few seconds if internet conection is working, and if it fails a few times, the app turns wifi off and on? It will require a rooted smarthphone to control wifi switch.

3) Do someone know how to send bug reports to Xiaomi? It would be good is they get a link to this thread.
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] Segadorn:
I have updated to 11.0.5 now, lets see if its fixed or not. I have used the inbuilt report feature in the phone to report the issue but anything else except this post.
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] Urmelausmall:
I have flashed xiaomi.eu 11.0.5 today. Still Wi-Fi Problems here. Hope Xiaomi get this fixed soon.
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] Segadorn:
I have been contacted by Xiaomi support in the phone app. Now at least they are aware of the problem.
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] Urmelausmall:
They called me today too. I have send them logs. At least they are working hard at this Problem. Everyone should send them logs to get this error fixed soon.
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] KnightAtNight:
I may found the cause and workaround to prevent this bug.

Normally WiFi recognizes absence of internet connection. But in our case we're still online and I noticed some syncs still working. So DNS is coming to my mind. But I still changed my wifi to static IP using Google 8.8.8.8 DNS.

With Pie(?) Google introduced "Private DNS". I remember in MIUI 10 this feature was hidden and by default "off". On my NOTE 9S (global MI version) this setting was set to "Automatic" by default. After turning it off while dysfunctional WiFi, internet was coming back right away. After this (still) continuous connection.

The time is too short to be sure it's gone forever (*evil laugh*), but you guys could help to test.

You find the option in "Settings | Connection & sharing | Private DNS".
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] DjXavy:
Good work. Continue trying things!

I switched off that same option days ago.

My 9S still have problems with wifi.

Sometimes, even switching the screen off a few minutes is enought to trigger it.

I'm still trying things, but no luck so far.
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] skezza:
Although I've only had it for one day, I've not seen this problem yet. Wonder if it's a Wi-Fi compatibility issue or something strange?
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] Urmelausmall:
I have noticed that I dont have problems when I am connected to a 802.11n network. The last Days I have had the Problems I Was connected to 802.11ac (2,4ghz + 5ghz). Today I was connected to an old 802.11n network and everything seems to be okay. Do you have the Problems with both Networks?
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] DjXavy:
Interesting. I'm connecting to a 802.11ac wifi too.

I will switch to a 802.11n one and see what happens.
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] slybunda:
I'm on 11.0.2 mine is EU global firmware.

It was mentioned that the problem is with the hardware based cryptographic acceleration engine which handles the WiFi encryption processing. When the phones screen is off after some time phone goes to deep sleep mode. The WiFi module is still connected but the crypto engine shuts down so it can't process the WiFi packets and gets stuck.

The thread on mi forums mentioned that the only ways to fix this is to prevent deep sleep on the phone which will have huge impact on standby battery life.

Another option given was to use an open WiFi network which doesn't have encryption. That's not good for obvious reasons.

Xiaomi also mentioned a fix where when screen is off the phone can go to mobile data and when screen is on it can then put WiFi back on. That's probably what's been partially implemented in the 11.0.8 update.

I'm not sure what's happened to that thread on the mi forums it's possible it's been locked and removed to keep a lid on this issue.

---------- Post added at 09:18 AM ---------- Previous post was at 09:16 AM ----------

Also mentioned was that this issue is not something to do with the Snapdragon 720g soc but it's to do with Xiaomis implementation of it in this device.
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] Naroyas:
It's a random bug that startet after the 11.0.8.0 update. There ist no trigger for it as far as I know.

---------- Post added at 10:32 AM ---------- Previous post was at 10:26 AM ----------

This sounds not realy like an actual hardware issue. More like a realy bad implementation of the software.
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] slybunda:
it could be the wifi driver provided by qualcomm but from what the thread on mi forum mentioned its a hardware issue specific to this phone. time will tell if they can do anything about it.
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] wedra:
On the other hand, I believe it is a software problem, it also happened on my old Xiaomi MI 5s plus, both on MIUI and Lineage OS 16. On MIUI it has been resolved after some updates, on lineage os I installed a custom kernel (Pepsy Kernel) and the WiFi has resumed normal operation without ever disconnecting. Recently also with the stock kernel I have not had any more problems.
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] ascender13:
I'm on 11.03 global in the UK and haven't noticed the issue
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] gsmyth:
Im the same, just got the notification for 11.0.8 update this morning and hesitant to install it in case this issue crops up.
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] xsam123:
Sadly, I can confirm that the latest update (11.0.8.0 QJWMIXM) doesn't really fix this issue. The connection was been working OK since I updated my phone the last week of May, but this week Whatsapp Desktop sometimes shows the message "Check phone internet connection", the same before the update. However, it happens randomly I think, less times than before.
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] tangoviking:
I hope they didn't mean just normal screen off and they meant screen off + deep sleep? Because otherwise it would be problems keeping a connection for instance downloading large files that did not finish before screen timeout.

It seems to me that when the phone wake up from deep sleep a command could be sent to restart wifi. This problem is on RN9P joyeuse too.
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] BenjieLoria:
I noticed that my apps stopped receiving internet access when i enabled WiFi Assistant > Traffic Mode. When enabled, MIUI prioritizes the foreground apps over background apps. In Extreme Mode, once your phone is locked or in homescreen, apps in background is prevented to access the internet.

I hope this helps. So far this is the only thing i noticed in my Redmi Note 9S.
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] simone982:
Hello, from my analysis it seems that this issue is related to the Group Key Update Period, which is set on the access point (and likely not handled correctly by the phone): on my mikrotik ac² this time can be set in a range from 30s to 1h and I saw several log messages: "disconnected, group key timeout". If I change this interval and reconnect to wifi, I can get that log message exactly after that interval.

On another AP I have, TPLink Archer D5, which has default Group Key Update Period setted to 0 and means update disabled I don't have that issue.

Please note disabling key update could possibly cause security issues on your network.
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] Vincent Foxx:
Bought this Phone 2days ago, I tried factory reset 3 times, and doesn't fix anything. Been digging around the internet for temporary fixes, and nothing worked except rebooting my moden. Rebooting my moden takes a while disconnecting everyone from the wifi, plus waiting for it to start. I tried the reset networks, toggle wifi off/on, reboot phone, soft reset, factory reset, forget the network, also turned off wifi assistant.

Was wondering if installing a new rom would fix that problem? was thinking installing the pixel experience rom, but i've read the bluetooth isn't working, and i use my true wireless headphones for workouts so that's a big problem. If the problem is fixed switching roms anyone recommend any? one that has everything working, and has a decent android experience. or should i wait till xiaomi patches the phone?
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] terry_mccann:
Update to 11.0.8 should sort of work.
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] Naroyas:
The 11.0.8.0 is only a workaround and brings some new problems -.-
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] simone982:
I just chatted with support but they don't have a solution yet. I had the following options:

- send my phone to the service (it is less than one week older and I have to buy a new one)

- send back to amazon (and very likely receive a new phone with the same issue)

- send another report from feedback area and wait for un update

I have just sent another report, please if you have the same issue send a report too, I hope this will be handled with very high priority
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] ascender13:
What are the new problems ?

Btw I haven't noticed any problems with my wifi
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] Naroyas:
- Random restarts of th "SIM Service" which cuts all mobile connection for a moment. Even calls.

- Galileo GPS not working

- GPS cuts connection if the screen is off. Very annoying if you trac your training.
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] simone982:
Which kernel is it using and which version of wpa_supplicant?
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] phinks94:
Hi,

Just bought a Redmi Note 9 pro, version 11.0.1 , bug is there, wifi connected and no internet. And i think the same happened with the data network as well. Is there a solution ? or shall i buy a new phone working properly ..
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] simone982:
Not fixed yet. Please report to xiaomi through settings -> feedback menu
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] rkeuchel:
Hey everybody,

I reported this annoying bug via "settings - feedback" a second ago. Linked to this thread, to show it's a well know bug. Hopefully it will be fixed soon.

Does anybody have sudden restarts while phone is in sleep mode? I have a lot of them and as far as I can see, only when my phone is on wifi. Thought this could be the same issue.

Greetings

Ralf
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] rn9ps:
I've never been that underwhelmed by a phone before. Not only do I experience disconnections of my calls, the new problem that showed up today is completely ridicoulus: Whenever I try to download something from Google Chrome, the entire phone just turns down. Sometimes it reboots by itself, sometimes it's completely turned down and it takes ages until you can turn it on again. I was able to reproduce that specific problem dozens of times in the last hour. I really can't wait to send that not-so-smart-phone back to where it came from.
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] dante_tds:
Does this issue affect joyeuse - Redmi Note 9 Pro (Global)?
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] tangoviking:
Yes.
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] rkeuchel:
seems to be solved with 11.0.3 on my phone

Hey,

it seems to be solved with MIUI 11.0.3 on my phone (fingers crossed).

Here is what I did:

Because of the fact, that there is no other OTA update per default than 11.0.1 for my phone (yet), I had to download it from

https://c.mi.com/oc/miuidownload/detail?device=1900378 (can't link it due to "new user status")

I live in germany and thought I should have a "Redmi Note 9 Pro global" Rom, but the Update process told me about "a different radio version". So I took V11.0.3.0.QJZEUXM which is for the EEA Version (no idea what EEA stands for; bought my phone directly from mi.com/de).

To install it, I had to go to "settings - my device - system-update" and klick the "11" multiple times (like 5-10 times), since it says something like "additional update options enabled". Now you can klick "the three dots - choose update package" and choose your downloaded file.

After the system checked if it's the right one, you can install it by a klick.

I didn't root my device or something like that, the updateprocess is (as I believe) identical to an OTA Update. The packages is directly from mi.com, so I wasn't afraid of installing it ;)

I'm running this version since yesterday afternoon, with no Wifi issues so far (fingers crossed again) an no forced reboots.

Hopefully this may help you ;)

greetings

Ralf
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] simone982:
Thank you for the update. Do you remember which was original version? Maybe QJZMIXM?

I have global version too, with updater broken, so probably I can try too
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] rkeuchel:
According to my search history, it should have been "11.0.1.0(QJZEUXM)"
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] simone982:
Thanks, so you didn't switch from global version to european version (I don't know what is the difference), as QJZEUXM should be european.
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] ForForkSake:
yep

I flashed the 11.03 EU version in TWRP (was on 11.08 global) after formatting data and wifi bug no more
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] simone982:
have you experienced delays on gmail notifications in 11.03 EU and/or in 11.08 global?
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] tangoviking:
Thanks for info. EEA stands for European Economic Area and better comply with GDPR privacy rules and software licenses, perhaps some other little change but it's mostly legal stuff.

You can also install new ROMs from a computer with the MI Flasher tool and a Fastboot version of the ROM.
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] simone982:
According to some blogs, due to Dragon Boat Festival, Xiaomi will suspend all office work from 26-06-2020 to 02-07-2020 and will be resumed on 03-07-2020.

So we should not expect any fix in at least 2 weeks...
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] Vatos_locos:
question i got a 9 pro too with the same issues

Version: V11.0.1 .QJZEUXM (MIUI11)

fot the peeps that flashed the V11.0.3.0.QJZEUXM from here https://c.mi.com/oc/miuidownload/detail?device=1900378

Did you flashed it from restore mode or the updater app ?

if from the app did it wiped all data ?

also from the app it does not let me update it says that its not allowed to update to an unofficial version
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] yunsen:
Thanks to all here. I have the same issue. changing my 5g wifi network frequency to channel 40 helps for me. Hope xiaomi will fix in next update.

I dont want to be annoying but i want to know how can i get back my app vault because in home screen settings i can only tick hoogle disvover. No option for app vault. Sry maybe not to this thread but i cant find anything on internet..

I have note 9 pro global using in germany.
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] gsmyth:
Have you uninstalled app vault by accident? Its on the play store so you can check if its actually installed.
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] yunsen:
Thanks but i have uninstaled and instaled again but no way there is no option for app vault getting on.
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] tangoviking:
Info: I fastboot flashed my 9Pro Joyeuse with 10.03 EEA and made two long sleep periods to check. 3h and 12h. No problem with wifi.

But device is now not Play store certified and of course like always with MIUI the mobile network is wrong for my region. Without Magisk or custom ROM these Xiaomi phones are always trouble.
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] simone982:
As it seems that more reports means more priority for bug fixing, starting from today I will report again twice a day until bug is fixed. I suggest other users to do the same.

You can report a bug from settings -> services and feedback -> send feedback
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] Ahazuerus:
Hi , thanks for this useful information, I have Xiaomi Redmi note 9 (3/64 version) which is not redmi note 9S nor the Pro variant, can I still flash the same rom you used in my note 9 without any issues?
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] gsmyth:
I have received a notification for an update v11.0.9.0.QJWMIXM, does anyone know if the WiFi issue persists with this version?

Edit: also has v11.0.8.0 been removed from the miui site?

https://c.mi.com/oc/miuidownload/detail?device=1900378
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] galaxy6220:
Just received this update notification too. I've not downloaded it yet and no mention of any of the most needed fixes! The frustration continues.......
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] gsmyth:
I'm still on v11.0.3.0, not sure whether to update yet or not!
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] slybunda:
just a security patch update on 11.0.9
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] blowy666:
I'm also using v11.0.3.0 on my Note 9s in Germany. Update notification came one week ago, I guess. Since then, no new version available.

But I also have no problem with WLAN.

One of the few bugs I'm facing is that the permissions I gave to apps are randomly resetted. So sometimes, when I start an app, I must give permission for using storage again, for example. But as I said, WLAN is without problems so far.

I have the EEA version on my phone, by the way...
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] fgendorf:
Annoying

I just bought a note 9 pro and this bug is pissing me off.
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] sacix:
I have the same problem in Xiaomi note 9 pro. Every now and then I have to disable and then re-enable the wifi to work. I also tried to add static IP but it doesn't fix it either.
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] gsmyth:
Its happening every time my phone has been went to sleep today, I've just submitted a report via miui feedback.

Edit: just bit the bullet and updated to 11.0.9.0, lets see if its any better.
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] fichl:
can confirm that updating the note 9 pro (european version - QJZEUXM) to V11.0.3.0.QJZEUXM (MIUI11)

form here: https://c.mi.com/oc/miuidownload/detail?device=1900378 fixes the WiFi bug. Had to install it manually though cause the update hasnt been offered on the phone. Data wasnt wiped by the update btw....

Also disabling 2,4ghz wifi on the router and only using 5ghz on channel 40 seemed to help.

Cheers
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] blowy666:
Have you taken a look into the protocol of your router?

Many user reported that wifi still disconnects when screen is off, the difference is that now the wifi reconnects automatically after a few seconds.

That's better than before, but perhaps still not really "fixed", cause it could drain the battery more than necessary...
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] fichl:
No I didn't. But you might be right. I noticed that messages would be received over Wi-Fi with screen off but every once in a while the phone woke up with no Wi-Fi active.

That was when I took the update and it's all good now.
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] simone982:
I confirm it is still not handled correctly. Group Key Update Period timeout still occours, but it is detected and device reconnects when it happens, so it is not a real bug fix.

Please note that some application could have problems with this fix, for example whatsapp saving backup on google drive
[Redmi Note 9S / Note 9 Pro (Indian Model) Question] slybunda:
whatsapp web has issues with this phone due to the constant disconnects