Windows laptop can't find T-Mobile Home Internet network... but all other devices can

I have updated the drivers, changed the Channel, enabled and disabled the wifi device. Nothing works. This is a Dell Inspiron 7548.I am very frustrated by this.

Just confirming that my problem is fixed by doing what has been said here in this post:

My Lenovo YOGA/Flex 15 laptop (pretty old, from about 2014-5 or so) running Windows 10 needed a driver update for its Intel wireless chip.  I have an Intel N-2760 wireless chip.  Previously I had a driver from 2015.  The latest I could find was a 2019 driver.  Installing the new one fixed the issue of:

1. not seeing the SSID of the T-Mobile Gateway

2. not being able to connect to the T-Mobile Gateway and get internet service
   
   thank you

I solved this problem by changing the Transmission Mode to “n/g”.

¿Cómo?

Open the admin panel by typing the "Admin IP" into the address bar of your web browser. The "Admin IP" can be found on the sticker on the bottom of the tower.

On the left, click “Networks” then “Wi-Fi Networks” then 2.4GHz.

"Transmission Mode" will be the first setting on the right. It's probably set to "Auto (ax/g)". Change that to "n/g" or any value which your network card supports.

Then scroll down to the bottom and click "Save Changes." This should be applied almost immediately and the Wi-Fi network should begin showing up.

¿Por qué?

The transmission mode "ax" is a newer standard. "g" is well supported by since the mode says "Auto" it was probably choosing "ax" instead of "g". Both "n" and "g" are well supported so choosing "n/g" is a good bet for fixing your problem but you may need to try some other option if you have really old hardware.

We choose to change the 2.4GHz network instead of the 5GHz network because 5GHz is new and if your hardware doesn’t support the newer transmission modes it probably also doesn’t support 5GHz.

Vypur wrote:

I hope this helps someone experiencing my scenario where Laptop WIFI Adapter Driver is old...

After installing the T-Mobile Gateway Gray Kit I was unable to see the SSID name in the list of available networks on my 2017 HP Laptop running Windows 10, but everything else in the house connected, since I renamed Gateway to the previous router SSID name. I searched the type of wireless adapter I have in laptop, Intel Dual Band Wireless-AC 7265, and visited Intel site to update Wireless adapter Driver to the latest for my device, 19.51.33.1. After the update I am able to see the Gateway SSID and laptop connects.

To find WIFI adapter name: Right click internet icon in Task Bar > Open Network & Internet Settings > select 'WIFI' > 'Harware Properties'. Look for Manufacturer Name an Model. Go to manufacturer site and search for driver download; mine was an executable file, which installed and updated after a few prompts.

One may access the T-Mobile Gateway Settings by connecting Laptop directly to Gateway via LAN cable into back of Gateway and enter 192.168.12.1 into browser. One may view and modify the 2.4GHz and 5GHz WIFI Networks Settings. Username: admin > Password: (Is what you determined during installation, or the default listed on bottom of Gateway.) I'm using my laptop on the 2.4GHz network, so I changed the Gateway Channel from default 1 to 11, this didn't affect the other devices already connected. None of these changes had any affect on laptop SSID discovery until after I updated the Driver.

Vypur!!! You da man. Been trying to figure this out for 2 days. I have the same wireless adapter as you in my somewhat older Alienware computer. T-mobile wifi would not show up in the network list. Did show up for every other device in the house including Roku's. I tried updating the driver by searching the internet for latest driver. Was informed that I had the latest driver. That is where the problem lies. I actually did not have the latest driver. Why it failed to determine that I don't know. Anyway, I followed your advice and went to Intel site and found the actual latest driver and downloaded and installed. Then I immediately checked the wifi network list and viola!!! There was my elusive T-mobile wifi network ready to connect. All good now, so thank you sir for your help. THIS SHOULD BE YOUR FIX, EVERYONE. Don't trust Windows to search internet and find latest driver. Go to site yourself and find it if you are having issues.

I switched to T-mobile over a year ago and I’ve had to keep our old provider allllll this time, because 1 desktop PC in the house couldn’t find the gateway.  
 

All total, I probably spent a solid week’s worth of time reading these forums, doing all the stuff posted here, having support walking me through fixes (that failed), and even reading forums and support from other companies, whose users were having the same issue with those products.  
 

I even tried skipping the wireless and plugging it into the Ethernet port on the gateway, since it’s a desktop PC and not going anywhere, but those hopes were crushed when I discovered it’s in the one place in my house where the gateway couldn’t get a  signal.  
 

Last week, I was putting in a grocery order in at Walmart, not even close to thinking about technical annoyances, and I had a brain storm.  I added a USB wifi adapter to the grocery order.  When it arrived, I plugged it in, ran the setup, and BOOM! the T-mobile gateway appeared on the list.  
 

A whopping $9.99 and 5 minutes solved the problem. The desktop PC is online, its user is happy as a pig in slop, and I can FINALLY kick my old provider to the curb. 

Sometimes it pays to think outside the box, and inside the Walmart bag.  😄

Cristina wrote:

Do you have both 2.4 and 5ghz broadcasting? I think some older laptops can't see both 

I do… interesting theory. Any thoughts as to a workaround? Pretty sure I don't want to disable either one...

you can take that same laptop and connect it to any other wifi source just fine though?

Yep, works just fine with every other Wi-Fi network I’ve ever tried.

Mine won't connect to tmoble wifi either but connects find to different Wi-Fi networks that I've tried.. following 

Angelmae05@ wrote:

Mine won't connect to tmoble wifi either but connects find to different Wi-Fi networks that I've tried.. following 

What's your hardware? I'm using an Asus laptop that's probably 3-4 years old.