When you trade in your old phone with T-Mobile, you'll get it for free. New and existing customers can swap an old device in any condition for a new Galaxy S25+ for free, or use the credit for up to $1,000 off other models like the top-of-the-line Samsung Galaxy S25 Ultra (delivered as 24 monthly credits on your bill).

If you swipe down on the Control Panel side of your display, you’ll see a pencil icon. Once in that menu, you’ll see Panel settings in the top left, where you can combine notifications and quick settings again. If you really need extra quick toggles displayed at once, perhaps it's worth leaving the One UI 7 change as-is, but I like reverting.