Develop Bugs

Slow Wi-Fi after WW_2.20.40.97_20150917 update?

I did a search and didn't find anything. I've been updating my ZE551ML and keeping it completely stock. I am on the latest update (WW_2.20.40.97_20150917) and did a Factory Reset for a clean start. I realized after setting up my Wi-Fi again that speeds are extremely slow; <20 Mbps. This is on both the 5 GHz and 2.4 GHz bands, and even if I put it in the Performance Battery mode.
Is anyone else seeing similar and if so, did it start with this update or something earlier?

Is it because of the location? For me, Wi-Fi working normally (at least didn't affect my daily use) except for in my room which is not very far from the router. I get 3 to 4 bars wifi, but it will stop working for sometime and speed is very slow I can't even watch a video without being interrupted. If I walk out of my room, speed is back normal. It's like my room is protected against wifi
Sent from my ASUS_Z00A using Tapatalk

It is definitely something up with my ZF2. I have plenty of other devices connected to the same Wi-Fi network that get appropriate speeds. I'm pretty sure it also got great Wi-Fi speeds when I first got it, but this is the first time I re-checked the speeds after all of the various software updates since release, plus a Factory Reset.

FYI, after some additional testing as well as downgrading the firmware, this seems to be some sort of weird interaction between my router/access point and the ZF2.
I'm currently using the T-Mobile CellSpot (basically a ASUS RT-AC68 with T-Mobile custom firmware) in Access Point mode, and what I've been able to determine is that the ZF2 seems to be speed-limited when connected to the "normal" SSIDs (I have separate ones for 2.4 GHz and 5 GHz). I have configured guest SSIDs (which have Internet access but not local LAN access) and when connected to those the speeds are as expected.
Really doesn't make much sense to me since it is the same wireless radio on the router. But at least I can reproduce it definitely at this point.

Some time lag )

chp said:
I did a search and didn't find anything. I've been updating my ZE551ML and keeping it completely stock. I am on the latest update (WW_2.20.40.97_20150917) and did a Factory Reset for a clean start. I realized after setting up my Wi-Fi again that speeds are extremely slow; <20 Mbps. This is on both the 5 GHz and 2.4 GHz bands, and even if I put it in the Performance Battery mode.
Is anyone else seeing similar and if so, did it start with this update or something earlier?
Click to expand...
Click to collapse
My ZE551 ML is also facing some issues after the final update WW_2.20.40.97_20150917. Cellular data is not working. All the buttons are working and on but arrows are not displayed and no data transfer and status says Cellular network status-Disconnected.
poor clarity in voice calls to the receiver and slow system respond with even phone book app.
Expecting a kind support ....

Mi 5S horrible Upload speeds

Have tested a few times and the upload speeds over WiFi are horrible. needs ages to even start transmitting and when it does i get 0.01 and sometimes 1 Mbit/s while every other device on the network gets 6 Mbit/s up.
So does anybody here have similar issues or maybe a solution? Download is also bad sometimes but not as bad as upload.

No, anything good with xiaomi.eu ROm
Gesendet von meinem MI 5s Plus mit Tapatalk

My results on Ookla speedtest:
1. mobile: Ping 67, Upload 1,1 MBit, Download 7,6 MBit - o2 Germany 3G (yesterday)
2. Wifi: Ping 24, Download 45,19 MBit, Upload 9,39 MBit - 1+1 Germany
3. mobile tonight: Ping 76, Download 17,29 MBit (1st test) and 28,89 MBit (2nd test), Upload 4,87 MBit - o2 Germany 3G
Here in germany we need in o2/ vodafone mobile web Band 20 for good 4G-connections, missing in Mi5S.
Sometimes the 3G-connections are horrible, sometimes okay.
Xiaomi.eu rom, newest stable version.

I just tested WIFI with the website http://testmy.net, received 82 Mbit/s download und 51 Mbit/s upload rate, this is good.
Latest China Stable ROM.

I tested again and the issue only seems to occur with 2.4 GHz networks, the 5 GHz is fine. Maybe it's a hardware issue after all

2.4 can be very overcrowded and also cause speed issues. Also which ROM are you running? If you aren't using the official China ROM, then there is the possibility of bad drivers.

patoberli said:
2.4 can be very overcrowded and also cause speed issues. Also which ROM are you running? If you aren't using the official China ROM, then there is the possibility of bad drivers.
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Click to collapse
Haven't changed ROMs or anything really yet but I will probably flash the eu rom based on the feedback in this thread. System info says MIUI Global 8.0.

You have to check exact version. Latest official is 8.0.18.0. If you have an additional 0 in the number, it's a fake shop rom. Also if you have any other language than Chinese and English, it's a fake ROM. Don't forget, even the xiaomi.eu ROM is a custom ROM, with all it's up and down sides.

W3D3 said:
I tested again and the issue only seems to occur with 2.4 GHz networks, the 5 GHz is fine. Maybe it's a hardware issue after all
Click to expand...
Click to collapse
Have you checked that your Wifi network isn't on the same channel as someone else's nearby? Get Wifi analyzer and check the channels, and if necessary, change your wifi channel from your router's settings.
I have the Xiaomi.eu weekly ROM and I get maximum speeds in both directions that my internet connection allows. About 50/30 Mbps down/up. Haven't tried moving files within my home network, I'll test that once I'm back at my apartment and update here.

Kepee said:
Have you checked that your Wifi network isn't on the same channel as someone else's nearby? Get Wifi analyzer and check the channels, and if necessary, change your wifi channel from your router's settings. .
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Click to collapse
Not necessary, WiFi is fine and always has been on any other device.
Kepee said:
I have the Xiaomi.eu weekly ROM and I get maximum speeds in both directions that my internet connection allows. About 50/30 Mbps down/up. Haven't tried moving files within my home network, I'll test that once I'm back at my apartment and update here.
Click to expand...
Click to collapse
Yeah, I just checked my version number and it seems I have a custom Vendor ROM with Version 8.0.10.0.0 ...
Will flash the Xiaomi.eu version and test again, thanks for the heads up!

Wifi speed problem

After the last pie update, wifi speed is not good enough.
When i test speed with oakla, its almost 5mbits. If i turn off location, everything is normal. If i turn on location wifi speed is getting worse. There was no problem at oreo. Is there any solution about that problem?

Do you have bluetooth on? I found out that when m bluetooth is on, WiFi conwction ia really bad. This os only on pie.
Check out my thread. https://forum.xda-developers.com/mi-a2-lite/help/bluetooth-wifi-conflict-pie-update-t3883829

sgunaydin said:
After the last pie update, wifi speed is not good enough.
When i test speed with oakla, its almost 5mbits. If i turn off location, everything is normal. If i turn on location wifi speed is getting worse. There was no problem at oreo. Is there any solution about that problem?
Click to expand...
Click to collapse
Hello,
Do you have the same problem on your computer ? If yes try to restart your box.
Pierre

sgunaydin said:
After the last pie update, wifi speed is not good enough.
When i test speed with oakla, its almost 5mbits. If i turn off location, everything is normal. If i turn on location wifi speed is getting worse. There was no problem at oreo. Is there any solution about that problem?
Click to expand...
Click to collapse
I've the same problem here...
WiFi + localization on = slow wifi performance 5/7 mbits
WiFi + localization off = normal wifi performance 50/55 mbits
The problem is after pie update.

there is no difference after February 19 update. that is terrible. shame on Xiaomi

For me, it seems as the problem is not localization but Bluetooth. When I turn off bluetooth, it's normal speed and when Bluetooth is on, it drops to incredibly slow speed. Altough localization might interfere with it, because it uses Bluetooth, I don't think it's the root cause.
Also, it is not only the speed between a router and the Mi A2 Lite that is slow, but also the connection from Mi A2 Lite as hotspot to any other connected device.

For me this issue all resolved when I installed a new router at home. I know this isn't a proper solution but if you have a backup router, give it a try.

After bluetooth is off,i have fast wifi,when bluetooth is on wifi is slow speed.

Some news about a soluzion? I have same problem.

For me the only solution is to use 5GHZ wifi.

For me, it appears to happen when I use both. I used to have always localization on and bt off but recently I bought a mi band I that forced me to enable bt aswell. Wifi speeds decreased a lot since that. Now I tested and with only one of them off it works great but with both, it doesn't.

thetryhard said:
For me, it appears to happen when I use both. I used to have always localization on and bt off but recently I bought a mi band I that forced me to enable bt aswell. Wifi speeds decreased a lot since that. Now I tested and with only one of them off it works great but with both, it doesn't.
Click to expand...
Click to collapse
You on stock ROM, and what version?
On Android Pie (stock, at least), it is a known problem that turning on Bluetooth or GPS will decrease WiFi connectivity and also some users reported that it will decrease Internet speed too. Hopefully Android 10 and / or incoming updates will fix it but this is Xiaomeme were talikng about, and Xiaomeme + AndroidOne = bugs and Xiaomeme's 'don't care' attitude.

thetryhard said:
For me, it appears to happen when I use both. I used to have always localization on and bt off but recently I bought a mi band I that forced me to enable bt aswell. Wifi speeds decreased a lot since that. Now I tested and with only one of them off it works great but with both, it doesn't.
Click to expand...
Click to collapse
I tested mine. Wifi speed stayed same when i connect my Mi Band 4.
But Bluetooth increases the Ping.

Hotspot Connectivity Problem

Guys i'm having a problem with Hotspot where i can't have anything connected to it for a prolonged time... I tried both 5 and 2.4Ghz but my Moto X4 and my friend's S10+ can't stay connected to it for even a second... It only works after i restart the note 8 pro a couple of times... And even then it disconnects from time to time... Any of you having the same problem?
Edit: I also tried it on two Laptops.. Still the same issue. Sometimes it says the password in incorrect and try again. But i connect with the QR code so that can't be true...

Possible interruption from another WiFi or other signals around your area. Try testing in a isolated are or use other places. It might be the WiFi channels collided.

Trisks said:
Possible interruption from another WiFi or other signals around your area. Try testing in a isolated are or use other places. It might be the WiFi channels collided.
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Click to collapse
I checked on another phone... This seems to be the issue but i will update on this once i get home. I'm almost sure i had the same issue at home.

Yup. That seems to be the issue.. thanks for clearing that up. However, does that mean I'm never going to be able to use hotspot at work.. or is there someway i can play around with the settings and fix this?

My phone is redmi note pro 8 , I am unable to connect my hotspot to any other device. I tried restarting and switching off my phone, also switched off other hotpot and wifi networks and tried both 2.4 and 5Ghz but didn't work.

for my device's hotspot there is no problem for connectivity but there is a bug where I can't see who is connected to my hotspot and only shows the number of connected devices which means I can't block users from my hotspot..
my advice try to flash again with the mi flash tool in fastboot mode.
to do so it must have unlocked the bootloader

I have this same problem for my redmi note 8 pro how to fix it

Question 5ghz WiFi Issue

I bought a Poco F4 (global version, xiaomi.eu 14.0.5.0) about one month ago, I haven't had any issues with it whatsoever, save for the fact that it suddenly won't detect my 5ghz WiFi networks (my main router + a repeater) - and I'm not even sure if this is an issue with the phone itself.
I'm coming from a Samsung Galaxy S20 FE, which was known to have this issue, but to have this happen on 2 different phones is really weird. If I recall correctly this issue started to affect me after I changed my ISP.
The only ways I have to detect the networks again is to go the debug mode and use the WiFi Sniffer Test Tool or reboot the phone, which was more or less the same thing I had to do on the S20 FE (I had to go turn on airplane mode try updating the firmware via debug mode).
What I've tried so far to solve this issue:
1. Changing the channel of the 5ghz WiFi
2. Changing the bandwith from 20/40/80 to 20/40
3. Setting "Use Device Mac" on the phone's network settings.
4. Turning off WiFi Scan Throttle
5. Changing the bandwith to 20
All of the above methods, save for the last one, did not work. And while it does work, it limits the speed of my internet to bellow 100mbps.
The issue is not related to the WiFi coverage as well since it only happened when I'm on my own room, which is where my router is located.
I don't know if I can detect other networks apart from my own since even when they 5ghz detection is working I can't find any of my neighbors' networks. I'm unable to create a 5ghz hotspot on my S20 FE or on my old Redmi Note 9S for some reason.
I'm at a loss on what to do, it happens on both stock and xiaomi.eu, at least and at most once per day.
If anyone else is facing the same issue or has any suggestion on what I should try next please let me know.
Thanks in advance.

I have no problems with 5G Wifi on xiaomi.eu rom
All the time 300Mbit/s
Buy Wifi6 router

This doesn't look like a problem with the phone (s).
Try connecting to another router to see if you have the same problem.

0kti said:
I have no problems with 5G Wifi on xiaomi.eu rom
All the time 300Mbit/s
Buy Wifi6 router
Click to expand...
Click to collapse
Are they on any specific channel/bandwith?
Both of mine are WiFi 5 though.
Thanks for the reply.
TheMystic said:
This doesn't look like a problem with the phone (s).
Try connecting to another router to see if you have the same problem.
Click to expand...
Click to collapse
Thank you for your input. I'll try to turn on my old router when the issue happens again. I find it odd that the issue affects both my main router and the one I use as a repeater, but everytime I made any slight change on the main router, the other one's signal almost immediately disappears to apply the changes as well, so it's probably that.

mode: 802.11a/n/ac/ax
channel: 48
bandwith :80MHz
I'm using Tenda TX3 Wifi6 router.
No issues at all. Great internet speed on wifi connection.

furquim97 said:
Are they on any specific channel/bandwith?
Both of mine are WiFi 5 though.
Thanks for the reply.
Thank you for your input. I'll try to turn on my old router when the issue happens again. I find it odd that the issue affects both my main router and the one I use as a repeater, but everytime I made any slight change on the main router, the other one's signal almost immediately disappears to apply the changes as well, so it's probably that.
Click to expand...
Click to collapse
The problem is indeed with your router + repeater setup. Your phones are fine.

0kti said:
mode: 802.11a/n/ac/ax
channel: 48
bandwith :80MHz
I'm using Tenda TX3 Wifi6 router.
No issues at all. Great internet speed on wifi connection.
Click to expand...
Click to collapse
Thank you! I'm almost certain that the issue is that the bandwith isn't fixed at 80mhz, it's 20/40/80mhz, and when I had the bandwith set to 20mhz I didn't had the issue.
TheMystic said:
The problem is indeed with your router + repeater setup. Your phones are fine.
Click to expand...
Click to collapse
Thank you! It's probably related to the bandwith. I was able to turn on an old router and my phone was able to detect the 5ghz network after the bug happened and my router + repeater signal was missing.

Have you tried resetting your router to the default settings? Or maybe set a specific IP address on your phone in your home network? As said above, it is a setup issue of your network most probably..