On a 5+ year old device that no longer has a data plan? T-Mobile's TOS doesn't apply during that time.
Plus, you know this is about software updates, right? It's generic but that's what it's about. Yes, upgrading means removing files at times as things get refactored or become obsolete, but they're not going to touch your main data, not that software isn't shitty and accidents happen.
Plus, you know this is about software updates, right? It's generic but that's what it's about. Yes, upgrading means removing files at times as things get refactored or become obsolete, but they're not going to touch your main data, not that software isn't shitty and accidents happen.