You don’t need a a Pi for that, if you have any competent modern router it just needs to be setup. You can look for custom firmware for your router (I use fresh

You don’t need a a Pi for that, if you have any competent modern router it just needs to be setup. You can look for custom firmware for your router (I use fresh tomato) but if you buy a compatible one it’s very cheap, T-Mobile gives away the AC1900 a rebranded AC68U/R to it’s customers that I flashed immediately so I can’t tell you the default capabilities, I just know it will do everything and more with the firmware I used. They’re under $40 on eBay.