That $20/month 4GiB data (they have $15/mo as an intro rate) Mint mobile plan doesn't include any devices. Whereas $120/month to TMobile is $60 for their base Magenta service (which is still more than $15), but $30/month for an iPhone 14, and another $30/month for a series 7 iWatch (and plan for it). People want shiny new things and sign contracts to pay for them.