MESH EXTENDER

@JDK292, Personally I use a Eero 6+ mesh wifi router. However, a few users point to setting up “extenders” with the T-life app: https://www.t-mobile.com/support/home-internet/app

From the T-Mobile website:  

Can I still use my existing Wi-Fi router with a Mesh Wi-Fi system?

It depends on the specific Mesh Wi-Fi system you're using. Some systems require you to use their specific router, while others allow you to use your existing router or replace an existing router’s Wi-Fi network. You should check the product specifications before purchasing a Mesh Wi-Fi system to see if your existing router is compatible.

With the T-Mobile 5G Home Internet Plus plan, the T-Mobile Wi-Fi Mesh Access Point is optimized for, and only compatible with, select T-Mobile 5G Gateways.

And a user made a suggestion about what to use: I use a Netgear EX2700 WiFi extender and can tell you it works perfectly with the T-Mobile Arcadyan KVD21 5G Gateway. It's inexpensive and works very well. It is much less expensive than many other solutions, and did I say that it works great?

So, it appears that you need to ensure you have a compatible extender.

Thanks for the feedback...the mesh extenders that I’ve tried have all been from T-mobile which is strange.

I'm on #3 and have only had their Internet since June 18. No way to remove extenders from acct, or add more than 3. After about 2 hours on the phone yesterday, they have 24 to manually remove mine from acct to try and reconnect #3. Not done yet. I called and ordered GFiber to replace this nonsense. 

I'm on my 2nd mesh extender. I was on the phone for hours trying to fix the first one. Did all kinds of things but nothing worked. Mind you, these were things that i already did prior to calling as well, but even after i told them i already tried that they still had me do them all over again. After all that they told me to take it to the store to get a new one. When I went to the store they acted like they couldn't do it and like they didn't know what i was talking about. They did end up giving me a new one, but now it's out too. I tried to ignore it in hopes that it would reconnect on its own but no such luck. I already know tech support advice will not help reconnect. Based on the forums, looks like I'll need yet another one or I'll have to switch providers again.

I don’t use any of the T-Mobile mesh extenders. I connect my own mesh network to their gateway via ethernet cable. That way no matter what internet provider I use, my wireless network is mine. Try eero on Amazon.

https://www.amazon.com/eero-reliable-gigabit-connect-Coverage/dp/B08ZK2BHP2/ref=sr_1_1?crid=3SGZRGSFLMV0&dib=eyJ2IjoiMSJ9.D9Vz65-5zwO7wvNVTpoQIKdJy9rI5xvvUBy7HqnBy9_R9xAVyY4Mk-4MYfZp5nrVrPsip9FydiYJ1An4FmV_Qq7S3XKN7yIZk-IthziAFboS1fC5s_F-txSWDpza2rl5urEC1dR2LMaGc0HG87fe-h1spkTlYZtrDMkN25Q5o09aSRN8amz1w8YtSWMzjjHB6s4nC7zilaGqFHq-2il1r6OPI1Frre7XLbT-iQdi5hk.veQSYnq-p6C8xTvVtSqTCFPifRQtcR6o7XOD31kXI84&dib_tag=se&keywords=eero+mesh+wifi+system&qid=1724614670&sprefix=eer%2Caps%2C127&sr=8-1

Thanks for the info. But I'm not spending my money to cover for their inefficient products  that repeatedly fail when it's part of service they offer/promote. I'm getting GFiber installed tomorrow. 

I have had the same issues with T-Mobile's mesh system. And cannot remove them and therefore cannot add any news ones. They said a new gateway will solve it. 

Will the google nest work with the plus internet?

I already have these.

https://store.google.com/us/product/nest_wifi_pro?hl=en-US&pli=1