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honzam
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Re: Xiaomi phone low Wifi TX rate

Thu Feb 08, 2018 7:45 pm

I have the same problem with Samsung Galaxy XCOVER 4 and tablet LENOVO YOGA 2
:-( very bad
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mlenhart
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Re: Xiaomi phone low Wifi TX rate

Fri Feb 09, 2018 3:28 pm

I have the same problem with Samsung Galaxy XCOVER 4 and tablet LENOVO YOGA 2
:-( very bad
Do you have the problem in both bands, 2.4 and also in 5 GHz?
 
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Re: Xiaomi phone low Wifi TX rate

Fri Feb 16, 2018 4:23 pm

Hello everyone,
I would like to make a conclusion about the problem with WiFi. I have read few topics about this problem.
viewtopic.php?t=123299
viewtopic.php?f=7&t=122853
viewtopic.php?t=102908
viewtopic.php?t=97827
Everybody tells that some devices connected to Wi-Fi 2.4GHz have low speed on download and TX rate on Mikrotik shows only 54Mbps. In the same time RX rate is ok (65-300Mbps depend on client device).
I wrote to Mikrotik support and received a reply:
currently we don't have clear solution and road map for this fix.
We can suggest to use 20/40mhz-Ce channel width or even use 20MHz channels.
In eC mode extension comes before control, that may disturb correct work on some wireless devices.
Of course suggestion is about nothing.
The earliest message about the problem was at Sat Jun 20, 2015 3:21 am
viewtopic.php?t=97827
infans, wrote :
Wed Sep 13, 2017 1:45 pm
We need to invest a lot of time to resolve this, it is hard to say when it will happen.
First massage Desember 2015. Is it not "a lot of time"?
viewtopic.php?t=102908 comment number 23, 24 and 35
I absolutely agree with "infans". Becomes 2018 year and still nothing. The latest version of firmware and ROS 6.41.2 have the same problem.
One of answers from Mikrotik support was:
Tue Sep 12, 2017 9:00 am
Yes, some low end chinese phones have such issues. I suggest for now to use better phones, since we can't solve this issue quickly.
viewtopic.php?f=7&t=102908 comment number 21
I tried to make a list of devices there was a problem:
Asus Zenfone 3
Chuwi Hi8
Google Nexus 4
Google Nexus 5
HTC One M9
Huawei P9 lite
Lenovo P2
Lenovo TAB 2 X30L
Letv x500
Moto Z2 Play
OnePlusX
Redmi Note 3
Redmi Note 4G
Redmi Note 5
Samsung Galaxy XCOVER 4
Samsung S7
Sony Xpera Z Ultra
Xiaomi Redmi note 2 prime.
tablet LENOVO YOGA 2
tablets Asus ME400C
Don't think that phones like Samsung S7, Google Nexus 5, HTC One M9 or Sony Xpera Z Ultra are "some low end Chinese phones"
The problem present at almost all routers with only 2.4GHz module. Mikrotik support confirmed this and told that there aren't problems on routers with 5GHz AC Wi-Fi module. However i tried with hAP AC lite and there is the same problem.
Not a long time ago becomes a new model Wi-Fi AP: "cAP AC". I hasten to inform that Wi-Fi works fine.

Dear Mikrotik experts, on behalf of all Mikrotik fans, please take care of solving the problem.
With best regards.
 
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honzam
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Re: Xiaomi phone low Wifi TX rate

Fri Feb 16, 2018 6:15 pm

I have the same problem with Samsung Galaxy XCOVER 4 and tablet LENOVO YOGA 2
:-( very bad
Do you have the problem in both bands, 2.4 and also in 5 GHz?
Only 2,4Ghz. On 5Ghz is 150/150Mbit
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nordex
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Re: Xiaomi phone low Wifi TX rate

Sat Feb 17, 2018 1:15 pm

I vote that we make new forum topic with alert to all new buyers informing them that mikrotik does not work correctly in 2.4ghz spectrum.
And with regular bumping we should keep it on top of forum.
 
mlenhart
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Re: Xiaomi phone low Wifi TX rate

Sun Feb 18, 2018 2:32 pm

I vote that we make new forum topic with alert to all new buyers informing them that mikrotik does not work correctly in 2.4ghz spectrum.
And with regular bumping we should keep it on top of forum.
I fully support this idea :)
MikroTik has to wake up and stop ignoring customer complains and blaming us for "buying lowend chinese phones" and releasing very poorly tested new devices (or better, non-tested at all... see issues with new AC devices based on ARM)
For this issue, 3 years are definitely enough time to fix it.
 
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Re: Xiaomi phone low Wifi TX rate

Mon Feb 19, 2018 2:46 pm

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mlenhart
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Re: Xiaomi phone low Wifi TX rate

Thu Mar 01, 2018 11:03 pm

Dear MikroTik,
could you please let us know we will see a fix for this issue any ever at all?
 
td32
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Re: Xiaomi phone low Wifi TX rate

Fri Mar 02, 2018 1:57 am

I have noticed this issue is present with Huawei P10lite also, max you can get on 2.4Ghz is 54Mbps.
 
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Re: Xiaomi phone low Wifi TX rate

Fri Mar 02, 2018 1:56 pm

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Re: Xiaomi phone low Wifi TX rate

Fri Mar 02, 2018 2:14 pm

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normis
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Re: Xiaomi phone low Wifi TX rate

Fri Mar 02, 2018 2:28 pm

This issue is related to the chipset incompatibility between what we use in our devices, and the chip in these phones. There isn't much we can do.
Newer devices, such as hAPac^2 and cAPac do not have this issue anymore.
No answer to your question? How to write posts
 
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Re: Xiaomi phone low Wifi TX rate

Fri Mar 02, 2018 2:32 pm

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Son1c
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Re: Xiaomi phone low Wifi TX rate

Fri Mar 02, 2018 3:52 pm

This issue is related to the chipset incompatibility between what we use in our devices, and the chip in these phones. There isn't much we can do.
Newer devices, such as hAPac^2 and cAPac do not have this issue anymore.
In previous your posts, you suggested to buy better phones, now when many users report about this issue not only on cheap phones, you suggest to buy your new devices. Nice work, Mikrotik.
Now, when i've bought your "old" device, i must to sell it and buy a new model, but where is the guarantee that on new model, such as hAPac^2, i will not have the same issue?
 
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normis
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Re: Xiaomi phone low Wifi TX rate

Fri Mar 02, 2018 3:58 pm

None of that is contradictory. I said that the hardware in these mostly cheap phones is incompatible (in some ways) with the chips used in MikroTik devices.
This means there are two solutions: change phone or change chips in MikroTik devices. Either solution works fine.
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Re: Xiaomi phone low Wifi TX rate

Fri Mar 02, 2018 4:19 pm

This means there are two solutions: change phone or change chips in MikroTik devices. Either solution works fine.
Do you suggest choosing a phone specifically for the router? Because not all phones work well with your devices. Are you seriously???
Last edited by Son1c on Fri Mar 02, 2018 8:03 pm, edited 2 times in total.
 
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Re: Xiaomi phone low Wifi TX rate

Fri Mar 02, 2018 4:20 pm

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Re: Xiaomi phone low Wifi TX rate

Fri Mar 02, 2018 4:29 pm

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dvm
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Re: Xiaomi phone low Wifi TX rate

Fri Mar 02, 2018 5:07 pm

This issue is related to the chipset incompatibility between what we use in our devices, and the chip in these phones.
If that's true chipset incompatibility, why the physically same MikroTik device with LEDE firmware installed works fine?
 
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Re: Xiaomi phone low Wifi TX rate

Fri Mar 02, 2018 11:30 pm

Do you suggest choosing a phone specifically for the router? Because not all phones work well with your devices. Are you seriously???
He said "Either solution works fine", so you can choose a different phone if you must keep using the RB951, or choose a different AP if you must use a specific incompatible phone.
 
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Re: Xiaomi phone low Wifi TX rate

Sat Mar 03, 2018 1:39 am

He said "Either solution works fine", so you can choose a different phone if you must keep using the RB951, or choose a different AP if you must use a specific incompatible phone.
It sounds strange and absurd, choose a phone for the router, or i something don't understand???
 
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Re: Xiaomi phone low Wifi TX rate

Sat Mar 03, 2018 8:39 am

Delete
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Re: Xiaomi phone low Wifi TX rate

Sat Mar 03, 2018 8:49 am

Hi everyone.Normis,where i can change wifi chip of one of my 100...1 miktiks FOR FREE? I think you must make return of all your "bad"devices.
 
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honzam
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Re: Xiaomi phone low Wifi TX rate

Sat Mar 03, 2018 7:15 pm

The problem is on the hardware level. To solve it you need to physically desoldering the chipset and replace it with others.
Why do you think the problem is in hardware? I have info from support - it is software problem.

Hello,
we will work on this problem but first we need to finetune the new wireless driver for the new hardware and then we would try to implement the fix for the old wireless hardware.
Best regards,
Uldis C.
LAN, FTTx, Wireless. ISP operator
 
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Re: Xiaomi phone low Wifi TX rate

Sat Mar 03, 2018 7:38 pm

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honzam
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Re: Xiaomi phone low Wifi TX rate

Sat Mar 03, 2018 8:15 pm

Yes, it is software problem. Because with LEDE works Mikrotik hardware better then original software (ROS)
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UpRunTech
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Re: Xiaomi phone low Wifi TX rate

Sat Mar 03, 2018 9:37 pm

Hello,
we will work on this problem but first we need to finetune the new wireless driver for the new hardware and then we would try to implement the fix for the old wireless hardware.
Best regards,
Uldis C.
Uldis/Normis: When you do your development and testing on Wifi modes do you validate the signal with a suitable Rhode&Schwartz/Agilent/Anritsu/Keysight/etc spectrum analyser and 802.11 protocol tester at all? It would seem to me such a device would reveal your problem very quickly! It seems to me like you're guessing!
 
nkourtzis
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Re: Xiaomi phone low Wifi TX rate

Mon Mar 05, 2018 10:46 pm

I have read through the topic and is clear to me that Mikrotik via Normis as representative, is either lying or the Mikrotik developers really have no much idea about wifi, although they are supposedly writing code for wifi devices. Both possibilities are really sad and show that anyone who takes wifi seriously should not invest much in Mikrotik Access Points.

Reportedly, LEDE works just fine in the very same devices for which MkTik initially responded that they need too much work to fix and later changed to that they are fundamentally incompatible and thus cannot be fixed. My guess? Of course the problem is not in the chip and can be fixed, but the Mikrotik Atheros driver is a highly proprietary patchwork, too alienated from the upstream code to backport any fix, especially since the current Mikrotik devs are clearly not very competent in low-level wifi coding: everything that requires hacking deeply into the hardware are off-limits for them, like NV2 for example.

In this respect, it looks like the initial reply by Normis was the more sincere one, while the second was just a clumpsy cover-up of MkTik's severely limited coding ability for anything wifi-related.
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but a large number of electrons were terribly inconvenienced.
 
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Re: Xiaomi phone low Wifi TX rate

Thu Mar 08, 2018 4:27 pm

I can confirm the same issue here with 2 devices - Xiaomi Redmi Note4 and a wireless usb stick with RTL8811AU chip. Both tested on 2.4 Ghz band.
 
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Re: Xiaomi phone low Wifi TX rate

Thu Mar 15, 2018 2:52 pm

Same problem here.. RX and TX <20Mbps
CAT S60
LG G3

Any news on a software fix?
Does the new hAP ac² suffers from the same issue?
 
Simono
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Re: Xiaomi phone low Wifi TX rate

Tue Mar 20, 2018 9:52 am

I also have big problem with now one phone on my network, it's Xiaomi Redmi 3. User told me thet biggest problem is form a week (probably last update for the router and CAPs). I see that RX connect is only 1-13,5Mbps, TX connect in the same time is to 150Mbps. I mustrun one AP on OpenWrt/LEDE to give use possible to use internet. In this case is biggest problem only for download speed because speed connect to APs is mostly 1Mbps.
 
Simono
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Re: Xiaomi phone low Wifi TX rate

Tue Mar 20, 2018 9:59 am

I also have problem with TX rate now for one phone on my network, it's Xiaomi Redmi 3. User told me that big problem is for a week. Then I've upgraded my router and CAPs to 6.41.3
He get TX rate mosty 1Mbps and of course can't use internet connection.
 
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endorphinity
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Re: Xiaomi phone low Wifi TX rate

Tue Mar 20, 2018 9:32 pm

This issue is related to the chipset incompatibility between what we use in our devices, and the chip in these phones. There isn't much we can do.
Newer devices, such as hAPac^2 and cAPac do not have this issue anymore.
Apparently, there is a serious flaw in your hardware design process. Here is the screenshot of my wap AC connected devices which shows quite a few devices none of which is low-end Chinese phone, as it was said previously. Especially interesting is the Tx rage of iPhone 6s which is even lower than that of Moto G2.
Screen Shot 2018-03-20 at 9.23.56 PM.png
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Re: Xiaomi phone low Wifi TX rate

Fri Mar 30, 2018 1:12 am

I am also having this exactly same problem.
My Mikrotik device is a RBCAPL-2ND (CAP Lite). The phone is a Moto G5 plus, which has a Qualcomm Snapdragon 625 chipset, probably the same processor as the Xiaomi's phones.
Interestingly, my Moto G5 plus initially is shown on the registration page with the Tx Rate set to 14mbps-20MHz/1s/SGI. But after a few seconds the Tx Rate changes to 54Mbps. When my phone is connected to the Mikrotik CAP Lite, the download bandwidth measured using IPERF3 is ~20 Mbps and the upload bandwidth is ~50 Mbps.
Another problem with this CAP Lite device is that the channels 7 and 8 cannot be used properly because they provide a max bandwidth of about 3 Mbps.

My Google Chromecast and my Lenovo ThinkPad T430 have no problem to connect to this CAP Lite at 802.11n speeds (72 Mbps and 144 Mbps respectively).

The same phone connects successfully at 802.11n speeds (2.4 GHz) to the following wireless devices:

TP-LINK TL-WR842ND.v2 running LEDE firmware 17.01.4 - Tx 72Mbps - Rx: 72Mbps - actual bandwidth measured using IPERF3: ~51 Mbps.
TP-LINK EAP115.v1 running firmware version EAP115(US)_V1_170106: Tx: 72Mbps - Rx: 72Mbps - actual bandwidth measured using IPERF3: ~52 Mbps.
TP-LINK Archer C20.v4 running firmware version Archer C20(BR)_V4_170309: Tx: 72Mbps - Rx: 72Mbps - actual bandwidth measured using IPERF3: ~50 Mbps.

So until this driver problem is fixed, this device is useless to me.
 
nemoforum
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Re: Xiaomi phone low Wifi TX rate

Sat Mar 31, 2018 1:42 pm

This issue is related to the chipset incompatibility between what we use in our devices, and the chip in these phones. There isn't much we can do.
Newer devices, such as hAPac^2 and cAPac do not have this issue anymore.
Okay, I followed your recommendation and got another issue viewtopic.php?f=2&t=132576
 
nemoforum
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Re: Xiaomi phone low Wifi TX rate

Thu Apr 19, 2018 12:39 pm

Hello,
we will work on this problem but first we need to finetune the new wireless driver for the new hardware and then we would try to implement the fix for the old wireless hardware.
Best regards,
Uldis C.
WHEN?!
 
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Re: Xiaomi phone low Wifi TX rate

Thu Apr 19, 2018 6:41 pm

Delete
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Pauloriply
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Re: Xiaomi phone low Wifi TX rate

Fri Apr 20, 2018 2:33 pm

Hello.
I was tormented with the same problems.
Today I updated one access point wAP AC to 6.43rc3. Result - It works as it should !!!
Problems with mobile devices have been fixed!
 
antonsb
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Re: Xiaomi phone low Wifi TX rate  [SOLVED]

Fri Apr 20, 2018 3:07 pm

6.43rc3

*) wireless - improved compatibility with BCM chipset devices;

This includes XIAOMI devices. Please upgrade and test - fixes soon will be included in current releases as well
 
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Re: Xiaomi phone low Wifi TX rate

Fri Apr 20, 2018 3:22 pm

6.43rc3

*) wireless - improved compatibility with BCM chipset devices;

This includes XIAOMI devices. Please upgrade and test - fixes soon will be included in current releases as well
ISP link 1Gb
AP - wAP AC
Devices:
Xiaomi mi max2 (down - 54 Mbps, up - 72Mbps)
Lenovo P2 (down - 90 Mbps, up - 70Mbps)
Tested only on 2.4 GHz
 
antonsb
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Re: Xiaomi phone low Wifi TX rate

Fri Apr 20, 2018 4:00 pm

Are data rates reaching maximal supported by devices?
 
Pauloriply
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Re: Xiaomi phone low Wifi TX rate

Fri Apr 20, 2018 4:09 pm

Are data rates reaching maximal supported by devices?
About Lenovo P2 - no questions.
But I'm not sure that Xiaomi Mi Max 2, with the manufacturer's support for MU-MIMO gives out a maximum. If I'm wrong, correct it.
 
dvm
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Re: Xiaomi phone low Wifi TX rate

Fri Apr 20, 2018 4:47 pm

6.43rc3

*) wireless - improved compatibility with BCM chipset devices;

This includes XIAOMI devices. Please upgrade and test - fixes soon will be included in current releases as well
Not only BCM and Xiaomi.
Lenovo K5 (Qualcomm Snapdragon) now get Tx Rate 72.2Mbps-20MHz/1S/SGI (max supported by device) with RB951Ui. With all previous ROS versions Tx Rate was 54Mbps (i.e. only 802.11g).
 
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Re: Xiaomi phone low Wifi TX rate

Fri Apr 20, 2018 6:05 pm

delete
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antonsb
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Re: Xiaomi phone low Wifi TX rate

Fri Apr 20, 2018 6:56 pm

Your phone is already working on max rate, this limitation in Your phone hardware.
 
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Re: Xiaomi phone low Wifi TX rate

Fri Apr 20, 2018 7:21 pm

delete
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Re: Xiaomi phone low Wifi TX rate

Fri Apr 20, 2018 7:35 pm

Your phone is already working on max rate...
So what about xiaomi mi max 2?
 
Bavarian
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Re: Xiaomi phone low Wifi TX rate

Fri Apr 20, 2018 9:24 pm

6.43rc3

*) wireless - improved compatibility with BCM chipset devices;

This includes XIAOMI devices. Please upgrade and test - fixes soon will be included in current releases as well
Wow! That's great, thank you!
 
antonsb
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Re: Xiaomi phone low Wifi TX rate

Fri Apr 20, 2018 9:59 pm

Are data rates reaching maximal supported by devices?
About Lenovo P2 - no questions.
But I'm not sure that Xiaomi Mi Max 2, with the manufacturer's support for MU-MIMO gives out a maximum. If I'm wrong, correct it.
This device is factory locked to 20MHz channels, to get more throughput you have to unlock 40MHz channel support
 
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honzam
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Re: Xiaomi phone low Wifi TX rate

Fri Apr 20, 2018 10:13 pm

Hello. Very thanks Mikrotik!!!
This problem is for me FIXED!
My affected devices: Samsung galaxy Xcover4, Lenovo K6 and tablet Lenovo YOGA2. With 6.41.3 is maximum TX rate 54Mbit and download speed max 20Mbit.

With 6.43rc are ALL devices Tx Rate 72.2Mbps-20MHz (maximum supported).
On samsung Xcover4 is download over 42Mbit
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