T-Mobile: Switch & Get $800 Off Old Phone

Switch to T-Mobile Essentials Saver (about $50/month with AutoPay) and bring your phone to get up to $800 to pay off your old device (via prepaid card). You get unlimited talk, text, and data with some limits. You must port your number, meet eligibility rules, and may pay fees; max 3–4 lines. This is a very budget-friendly path to a low monthly phone bill and a way for you to pay off your device.