2 of 3 Android 9 devices not seeing the 5Ghz WiFi on Brand New AC1900

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2 of 3 Android 9 devices not seeing the 5Ghz WiFi on Brand New AC1900

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2 of 3 Android 9 devices not seeing the 5Ghz WiFi on Brand New AC1900
2 of 3 Android 9 devices not seeing the 5Ghz WiFi on Brand New AC1900
2020-10-31 10:00:52 - last edited 2020-11-02 06:36:19
Model: Archer A9  
Hardware Version: V6
Firmware Version: AV

I just installed a Archer A9 to replace a 10 + y.o. Netgear WiFi router. It really helped with my LAN connected laptop. But I am trying to figure out why out of 3 android devices, all less than a year old, all running on Android 9. Only one can see the 5Ghz WiFi connection. The two that are blind are a Samsung J series Phone and an Chinese Off brand tablet from Amazon. The sighted device is a Kindle Fire 8. 

I've run through all the settings in the Android devices and the setup of the router. Done the deleting and rebooting, cache cleaning. gave individual SSID names to the 2.4 and 5 on the host and guest. After posting this, 3 hours doing internet search, it's the chair, beer and  YouTube research. Which turns into watching squirrel videos.

I live in a foreign country, Southeast Alaska. Any ideas, even the ones I have already tried will be greatly appreciated. I hate getting beat by a problem that should have a solution. It took me two days, but my new Kindle Fire 8 HD 2020 is now working with Google. The Play Store and Chrome browser are playing well with Amazon Appstore and Silk Browser.

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Re:2 of 3 Android 9 devices not seeing the 5Ghz WiFi on Brand New AC1900-Solution
2020-11-02 06:35:47 - last edited 2020-11-02 06:36:19

@PiratesSon 

 

Hello, thanks for asking.

 

I neither find any useful info online for this Samsung SM-J260A, but I guess it only supports the 2.4GHz wireless connection, so it cannot see the 5GHz signal, you may confirm this with the phone support if possible.

 

As for the DuoDuoGo P8, I do find that it only supports 2.4GHz signal, refer to the below, 802.11abg means it only supports 2.4GHz:

 

 

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Re:2 of 3 Android 9 devices not seeing the 5Ghz WiFi on Brand New AC1900
2020-11-01 01:07:14

@PiratesSon 

 

Do you happen to have the exact model numbers of the Samsung J Series phone and the Chinese tablet at hand?

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Re:2 of 3 Android 9 devices not seeing the 5Ghz WiFi on Brand New AC1900
2020-11-01 01:20:00

@woozle ,

The tablet is a DuoDuoGo P8, the phone is a Samsung SM-J260A. Today's search tells me from mfg specs they are not capable of 5ghz. On the other hand lots of different hacks are out on the web saying it can be down. No luck so far.

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Re:2 of 3 Android 9 devices not seeing the 5Ghz WiFi on Brand New AC1900-Solution
2020-11-02 06:35:47 - last edited 2020-11-02 06:36:19

@PiratesSon 

 

Hello, thanks for asking.

 

I neither find any useful info online for this Samsung SM-J260A, but I guess it only supports the 2.4GHz wireless connection, so it cannot see the 5GHz signal, you may confirm this with the phone support if possible.

 

As for the DuoDuoGo P8, I do find that it only supports 2.4GHz signal, refer to the below, 802.11abg means it only supports 2.4GHz:

 

 

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