Like someone else said, Lifeline is still a thing. For mobile phone plans it isn't quite as good as the old Lifeline + ACP combo where some were offering Unlimited minutes, text and data. Most are 500-1000 minutes, unlimited text, 4-5GB data.
You have to be on SNAP, Medicaid, or some other federal programs OR meet the income requirements. If you sign up online now they kick you over to a National Verification site to check your eligibility. It's pretty quick and painless. Then you'll get a free (shitty) phone, or a SIM card on some that do BYOP.