T-Mobile is replacing its Go5G plans with a couple of new options, complete with a five-year guarantee that it won’t raise your rate. But as always, there’s a bit of a catch.

The new Experience More and Experience Beyond plans match the outgoing plans almost feature for feature, but with more hotspot data. The Experience Beyond plan costs $100 per month (after an autopay discount) for a single line and comes with the same benefits as the Go5G Next plan, including a new phone every year and Netflix, Apple TV Plus, and Hulu bundled in. It comes with T-Mobile’s satellite service included, as well as substantially more high-speed hotspot data: 250GB, up from 50GB.

Experience More costs $85 per month for a single line after the autopay discount, which is $5 less than the Go5G Next plan it replaces, and now comes with 60GB of hotspot data rather than 50GB. Satellite connectivity is included, though only until the end of the year.

T-Mobile’s president of marketing Mike Katz tells me that the price guarantee is intended to give customers some peace of mind as prices on everything go up. “We felt like it was really important that we… gave them an assurance that for the next five years, they don’t have to worry about this category.” But the less-good news is that these plans don’t include taxes and fees like their predecessors did. Those are extra on top of the monthly rate, and are excluded from the price guarantee.

Even if T-Mobile keeps its word and keeps the plan rates locked in for five years, the company can still increase the fees it charges, add new ones, or reduce your autopay discount — things we’ve seen carriers do again and again.