[Samsung Galaxy S10 Questions & Answers] FloodDairy:
My Samsung Galaxy S10 5g Verizon phone can not connect to Wi-Fi 5Ghz Channel Bands of these sizes:

36

40

44

48

But my phone can connect to channel bands of these sizes:

153

157

161

165

If you have not programmed your router to only use 1 5GHz channel band for your 5GHz network, there is a good chance your router has it set to automatic. Which means aometimes you way be able to see the 5Ghz networks and other times you can't. But if you've actuvated your router and have never seen the 5GHz network until recently, then the router might have one of the lower channels set as the only channel band the 5GHz network should use. So the symptoms of this bug are:

You can only somtimes see and connect to the 5GHz network, or you can't connect to it at all, even though it's running and other devices can connect.

The channel bands I've listed are the only manually selectable channel bands I can select in my router's menu, but there might be more options or less depending on the router each person uses. But generally, when it comes to the 5GHz network, my phone needs higher bands to connect.

I have confirmed this IS a worldwide issue. I have multiple S10 5g phones here and they all can't connect to the 5Ghz channel bands of the lower frequencies (the ones I have already mentioned). I have also tested this with other non-samung devices and they were indeed able to connect to the 5GHz network when the channel bands are lower than 153.

How in the bloody hell am I supposed to fix this? Other users have had this same exact problem and have even posted it on Samsung's official forums. With no fix response. I want to get down to the bottom of this and want anyone to help me investigate this and get Samsung to fix this or at least bring a fix to light.

Here are some places that talk about the issue:

Can not see 5Ghz WiFi SSID if access point channel number is set between 36 and 64 on S23 Ultra

Hi All. This is my first post, and I am new to the Samsung mobile ecosystem. I have written about this problem to Samsung Support as well, but they suggested me to only reset my network settings to find out if that solves the problem or not, and that didn't solve it. So I wanted to write here to...

r1.community.samsung.com

won't connect to 5ghz wifi

I've tried everything under the sun with the phone and home router . Outside of sending it in for service has anyone had a solution

forums.androidcentral.com

I started using 5GHz WiFi yesterday. My phone supports both the bands, but today for some reason it stopped showing the 5GHz connection. ...

Answer (1 of 2): There could be a few reasons why your phone stopped showing the 5GHz connection. It could be due to a problem with the router, interference from other devices, or a problem with the phone itself. You should try restarting the router and phone, and if that doesn't work, you may ne...

www.quora.com

5Ghz band not showing in android devices - Home Network Community

Model : Hardware Version : Firmware Version : ISP : Model: TP-Link Archer C5400Version: V2Firmware: 1.2.2 Build 20170912 Hello! I have an Archer C5400 wifi router. All bands are working fine in Windows laptops and iPhones but 5Ghz band is not showing

community.tp-link.com

https://community.ui.com/questions/Galaxy-S10-prefers-2-4Ghz-over-5Ghz-Band-steering-not-working/c1e0418f-98f4-476b-a581-4e1b0fcea44e

https://www.reddit.com/r/HomeNetworking/comments/rjbu7j

https://www.reddit.com/r/galaxys10/comments/bz0xp5

https://www.reddit.com/r/galaxys10/comments/ismivn