Xbox One connects to modem, but not to internet

Its possible to connect to xbox live using your mobile as a modem. Set phone to modem mode connect to pc/laptop configure as main connection to the internet create a network bridge and make sure that sharing internet connection is switched on. p.s. Make
sure you know your internet limit as this can be costly boosters/bolt ons usually help..

I used to have cable internet. One problem I had was the line going from the modem to the wall (for the cable) was bad, so either my internet was slow, or there was no internet at all. If a new modem does not fix that, ask them to check the cable line. Also
even though your neighbors are on different channels, they still take up bandwidth to a point if that is what I am understanding. Or all of you and your neighbors on different cable connections or sharing one connection as in one main modem and having other
modem connect to it and or routers connecting to the one main modem? My apartment place has one modem and it stinks lol I have my own internet service.

Hello Black, welcome to the Microsoft community, I'll be happy to help you today;

I understand that your Xbox One loses its internet connection;

Initially I recommend that you restart your internet modem;

Unplug your modem from the outlet;

Plug the network cable into a different port on the modem;

Wait 3 minutes and turn it on again;

Turn on your Xbox One console and check if the internet connection is still lost;

Hope it works, see you soon!

I assumed it was the modem since if I plug directly into the wall (the complimentary apt internet) I have strict NAT and can't connect to any friends' parties. When I switched to time warner they gave me their own modem and I have my own router. I tried
using two different routers, both with ports forwarded specifically for Xbox One, and connected via ethernet and wifi, and both do not allow either my Xbox One or 360 to connect to the internet. Both don't even recognize the internet for that matter whenever
it is through my private TWC modem, but both do connect with the complex internet.

I try to connect it to one other modem but still cant connect to the internet