Dave P wrote:

Is there a booster or wifi range extender that I can buy that will help with signal strength on the other end of the house ?

Highly recommend a mesh network. I use my Eero system with the gateway...works perfectly. A super-inexpensive newcomer to the market is Vilo… very solid deal at $70. https://amzn.to/3y7n6Zw

Vilo works very well

So a signal booster will help increase the overall connectivity right ? As of now I only get weak quality still better then whatni had but I obviously wanna get up to excellent 

Yes. Worked very well. Now have good signal throughout the house.

https://www.amazon.com/Vilo-Coverage-Ethernet-App-Managed-Replacement/dp/B09252352F

Also if t mobile signal weak, try moving it to another window. I did, and it went from good to very good.

I am having issues with Gateway signal on devices here in our home.  Please tell me what signal booster I can use.  This thing is very close to being taken back to the T-Mobile store since I still have a few days left on my 15 day trial period.  If this can't be resolved goes!!!!

Vilo Mesh Wi-Fi System

Quickly and easily eliminate Wi-Fi dead zones in your home with the Vilo Mesh Wi-Fi System. Vilo covers your entire home in strong, reliable Wi-Fi signals.

https://store.viloliving.com/vilo-mesh-wi-fi-system

Check Amazon cheaper