Use t-mobile home internet and spectrum concurrently

@TerBritz it sounds like you are currently using Spectrum for both traditional cable TV and internet.  The T-Mobile service is internet only.  You might not save money if you dropped Spectrum internet and retained Spectrum cable, and added T-Mobile internet, because Spectrum does give a discount if you have more than one service with them.

Many people have eliminated cable TV completely and get all their programming over the internet via streaming (plus an antenna for local channels).   Read up on "streaming" and "cord cutting."  You can stream on Spectrum internet (and T-Mobile internet, and most internet services.)