New Oppo R9s - Wireless not working on 5GHz channels 100-128

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getontoit99

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#223481 1-Oct-2017 21:30

Hi All.

I bought an Oppo R9s today and in the course of setting it up, I found that it could not see the 5GHz radio in my FritzBox 7490, when the channel set in the FritzBox was in the range of 100-128.

The phone connected OK when channels 36-64 and 149-161 were used. My Meizu M3S phone and my Chromecast connected to all 5GHz channels from the FritzBox. The Oppo phone had the same problem when connecting to a Huawei HG659b router which I had at hand.

I've concluded that the phone is defective but if anyone has any ideas on this, I'd like to hear them.

Thanks

Scott

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#1875742 1-Oct-2017 21:32

i had this issue with my HTC M8 when running US Firmware.. only the lower channels would get decent speed.

is this an imported device?

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Jase2985

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#1875743 1-Oct-2017 21:38

https://www.rsm.govt.nz/consumers/pdf-and-documents-library/Wi-Fi%20Devices%20using%20the%205%20GHz%20Band.pdf

likely the device it self doesnt support something the wifi network transmitting

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#1875749 1-Oct-2017 21:49

Not all devices support the DFS channels, as there is additional approval stuff needed even for client devices about radar avoidance, so those channels are basically useless for anything since you cant use them outdoors for point to point stuff, and indoors most clients will not see them.

Richard rich.ms

getontoit99

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#1875804 2-Oct-2017 07:09

Thanks for the prompt responses.

The Oppo phones are being sold by Noel Leaming and JB Hifi, amongst others, but are a recent arrival to NZ, I think.

Richard, I suspect that you are correct about this phone in that the DFS channels are not available. The Meizu phone does have them.

Can you clarify between "not all devices support the DFS channels" and "most clients won't see them (the DFS channels)".

Thanks

Scott

getontoit99

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#1875825 2-Oct-2017 07:53

Update.

I was testing wireless without a SIM in the phone. After putting a SIM in, those 5GHz channels now work.

My guess is that the phone needed the SIM to work out which country it was in, to determine which 5GHz channels could be used over and above the bare minimum.

Kiwifruta

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#1875925 2-Oct-2017 09:43

Had the same issue connecting a client's Apple Mac to 5GHz.

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#1876515 3-Oct-2017 09:23

I have contacted OPPO regarding this and here's their response:

Oppo R9s is able to detect and connect to 5GHz wifi frequency ranges from Channel 36 (5180MHz) up to Channel 165 (5825 MHz) with the following preconditions.

i. Specific region equipped with specified 5GHz detectable frequency range.
Different regions will have a different allocated discoverable 5GHz frequency range. For New Zealand, Channels 36 up to 165 are allocated. Without inserting a simcard, this needs a manual region adjustment for the device to set up wifi 5GHz detectable frequency range.

ii. Simcard
A valid local simcard is required to acquire the country regional information accurately. This piece of information is essential for the device to intelligently accommodate necessary local information in order to set up wifi detectable limits.

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#1876530 3-Oct-2017 09:49

Kiwifruta: Had the same issue connecting a client's Apple Mac to 5GHz.

They need to address the issue with their wireless configuration - Apple simply get the country code from what the AP is broadcasting.

richms

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#1876572 3-Oct-2017 10:48

sbiddle:
Kiwifruta: Had the same issue connecting a client's Apple Mac to 5GHz.

They need to address the issue with their wireless configuration - Apple simply get the country code from what the AP is broadcasting.

No when I last had to deal with Mac wifi bs they get it from what any ap is broadcasting. Just seeing a frame set to UK or somewhere and it would mess up some of the 5 ghz from working.

Richard rich.ms

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#1876614 3-Oct-2017 12:31

sbiddle:
Kiwifruta: Had the same issue connecting a client's Apple Mac to 5GHz.

They need to address the issue with their wireless configuration - Apple simply get the country code from what the AP is broadcasting.

Thanks! Just what I needed to know.

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#1876627 3-Oct-2017 12:56

richms: No when I last had to deal with Mac wifi bs they get it from what any ap is broadcasting. Just seeing a frame set to UK or somewhere and it would mess up some of the 5 ghz from working.

Years ago I was using my (Android, I think) phone's GPS in central Auckland when the maps suddenly changed to Japanese. A couple of blocks later, they're back in English again. I presume that it saw a Japanese AP somewhere; at least I can't think of any other reason for this to happen.