Metro by T-Mobile: 1 Line for $25/Mo.

Metro by T-Mobile's single-line plan runs $25/month with AutoPay after a $30 first month, when you bring your own compatible phone. It includes unlimited 5G data, unlimited talk and text, and taxes and fees are already baked into the price, so there's no surprise bill. You also get a 5-year price guarantee, meaning that rate won't budge for half a decade, plus perks like Scam Shield call protection and T-Mobile Tuesdays freebies. It runs on T-Mobile's network with no annual contract and no early termination fee.