topic Re: XZ dont see 5Ghz networks in XZ Series

XZ dont see 5Ghz networks

DrontTula1 — Wed, 19 Oct 2016 19:20:21 GMT

Just bought new Xperia XZ dual, and it dont show any of my 5ghz networks (channels 149 width 80, 153 width 20). Old xperia z1 works with both networks without any problems, just as other 5Ghz devices (ipads, laptops).
Any suggestions how to fix it?

Re: XZ dont see 5Ghz networks

DrontTula1 — Fri, 21 Oct 2016 09:08:17 GMT

I've made a hard reset to XZ, after this phone was showing both of my networks, but was unable to connect - I enter password, and nothing happends. Networks have been remembered, showing in the list of wifi networks available.

In a few minutes these networks just disappear from ths list of available wifi spots.

Support team, please, tell me what to do:

- return the phone back and buy SGS7 ?

- wait few days/weeks while you guys fixing this problem (i sure this is a software bug) ?

Re: XZ dont see 5Ghz networks

Rickard — Mon, 24 Oct 2016 05:43:08 GMT

I'm very sorry to hear that

Would it be possible for you to try changing the channel on one of your networks to a lower channel and see what happens?

Which country are you located in and does your Xperia XZ have a SIM-card inserted and mobile network reception?

Re: XZ dont see 5Ghz networks

DrontTula1 — Mon, 24 Oct 2016 06:28:29 GMT

Hello.

> Would it be possible for you to try changing the channel on one of your networks to a lower channel and see what happens?

Yes, lowering the channel to 32-64 helps.

But then I ran in another problem. There are several apple macs in my home, and they have terrible 'feature': using 802.11d to choose what wifi channels to use. And according to 802.11d in wifi networks aroud me, I located in several countries simultaneously - Taiwan, China, Russia, USA. So using channels 149-161 is preferable, because they are working in all these countries, and OSX will enable them, whatever country it will decide to use.

> Which country are you located in and does your Xperia XZ have a SIM-card inserted and mobile network reception?

This happends in Russia. SIM-card (MTS network) inserted and LTE works very well.

After this question I decided to make a another test, and got a strange results.

If I insert SIM-card from another network operator (MTXC.eu) in SIM1 slot, then everything works with channels 149-161. If I insert MTXC card to SIM2, then phone shows both WiFi networks, but not connecting to them (generated bugreport https://drive.google.com/file/d/0Bwa6gfqZ0XP6N2FuMU02Ni1ZQjA/view?usp=sharing ).

Re: XZ dont see 5Ghz networks

Rickard — Fri, 28 Oct 2016 12:06:15 GMT

Thanks!

I've forwarded your log internally for further investigation. I'll let you know as soon as i have more information.

Re: XZ dont see 5Ghz networks

Rickard — Thu, 17 Nov 2016 07:43:14 GMT

Hi,

I've received more information on this and there are new regulations in Russia which prevents these channels from being used there. So your phone works as it should and you need to set your access points to a lower channel in this case.

Re: XZ dont see 5Ghz networks

DrontTula1 — Thu, 17 Nov 2016 08:05:43 GMT

Hello.

Thank for your answer, but... this is just not true

I have checked all of our regulation documents, and found what it is allowed to use frequencies 5150-5350 MHz, 5650-5850 MHz inside of a buildings. So channels 36-64 and 132-161 must be available.

http://www.grfc.ru/upload/medialibrary/c1a/prilozhenie-1-k-resheniyu-gkrch-_-16_36_03.pdf - this is a most recent list of frequencies and allowed power (in russian, sorry).

Re: XZ dont see 5Ghz networks

Rickard — Mon, 21 Nov 2016 11:26:57 GMT

It is allowed to use these channels indoors in Russia but there are import regulations preventing us from supporting them.

Re: XZ dont see 5Ghz networks

DrontTula1 — Mon, 21 Nov 2016 12:17:22 GMT

Hello.

Maybe you can give me a link to these "import regulations" ?
I have read a lot of our documents, and found only what marine navigation equipment, what used 5510-5610 Mhz, must be certified.

If there are really exist some denial for using these channels in imported devices, then a lot of manufactures have a big problems.

Re: XZ dont see 5Ghz networks

Rickard — Mon, 21 Nov 2016 13:16:20 GMT

I've received this information internally and i'm afraid i don't hold links or access to these kind of documents myself.

Information i got was that it's import and customs regulations that's preventing us from supporting these channels. Your Local support may be able to provide you with more information as this is country specific.

Re: XZ dont see 5Ghz networks

DrontTula1 — Mon, 21 Nov 2016 13:30:56 GMT

Thank you.

I will ask local support team, hope they will give developers actual regulations, and this strange issue will be fixed

Re: XZ dont see 5Ghz networks

DrontTula1 — Mon, 21 Nov 2016 14:18:30 GMT

Nope, they don't help. Just advise me to set WiFi mode strictly to 802.11n and use channels below 10 (facepalm).

Re: XZ dont see 5Ghz networks

Desperanto86 — Tue, 22 Nov 2016 11:45:13 GMT

Dude, the same problem with Sony Xperia X Perofrmance Dual. With SIM (megafon) I can use onle 36-64 channels, without sim - any channels I left feedback about it in russian support in jule, but still there are no any solutions from sony, they only advice to use low channel connect

Re: XZ dont see 5Ghz networks

DrontTula1 — Tue, 22 Nov 2016 11:56:15 GMT

What a pity

Anyway, support team, I have found what this prohibition was some years ago (2007-2011). Looks like somebody have read outdated regulations documents.

So, please, fix it.

PS. Russian support team is absolutely amateurish

Re: XZ dont see 5Ghz networks

Rickard — Tue, 22 Nov 2016 15:35:29 GMT

@DrontTula

I've forwarded this internally a couple of times with the same response but i'd be happy to do it again.

If possible, could you send me the source of the information you found that i can refer to?

Re: XZ dont see 5Ghz networks

DrontTula1 — Wed, 23 Nov 2016 07:50:45 GMT

> If possible, could you send me the source of the information you found that i can refer to?

Of couse.

First of all, I finally found the document where frequencies 5650-5850Mhz was not approved - Приложение № 2 к решению ГКРЧ от 20 ноября 2014 г. № 14-29-01 . But I'm sure what there was a stupid mistake, because there was a document Решение ГКРЧ от 15 июля 2010 г. №10-07-02 from 15 july 2010, that allow to use freq 5650-6425 Mhz until 2020.

In 2015 somebody finally noticed this mistake, and regulator issued another document Приложение 1 к решению ГКРЧ от 29 февраля 2016 г. № 16-36-03 in 29 february 2016.

So, i think this was a stupid bureaucratic mistake, and since 29 february 2016 these frequeinces are absolutely officially allowed to use.

Re: XZ dont see 5Ghz networks

Rickard — Wed, 23 Nov 2016 14:02:27 GMT

Thanks!

I've forwarded it again along with the information you provided.

Re: XZ dont see 5Ghz networks

DrontTula1 — Wed, 23 Nov 2016 14:53:56 GMT

Thank you!

Hope this information will be enough to fix this issue.

Re: XZ dont see 5Ghz networks

Desperanto86 — Thu, 24 Nov 2016 11:41:02 GMT

Can'u do the same for Sony Xperia X Performace? It has the same problem.

Re: XZ dont see 5Ghz networks

Rickard — Fri, 25 Nov 2016 05:58:23 GMT

I received the reply that we are unable to support these channels due to EAC regulations that can be found in this document:

http://base.consultant.ru/cons/cgi/online.cgi?req=doc;base=LAW;n=187098;fld=134;dst=1000000001,0;rnd=0.3424502320121974

@Desperanto

I forwarded this for X Performance as well but the answer is the same for this model.