Not a rumor, it is true. (I'm a T-Mobile customer and saw the notification on my account.)

I’ve seen that discussion on Reddit. But I still haven’t gotten a notification.

I didn't get a notification per se. It was when I signed into my account and went to the billing/autopay page that there was a banner at the top.

They have however recently increased customer incentive to be on autopay, by bumping the penalty for late payment from $5 to $7.

They will also give the discount if you use a debit card. I'm pretty sure the reason for this is because FedNow launches this summer (usa is finally getting nationalized instant payments) and the qualifying information is your debit card or checking details.

A debit card is still linked to your checking account. That doesn’t help.

It should still help, in that debit cards can have limits set. But you're right that it's not a full solution.

I just replaced the credit card on my up my account with a Privacy.com virtual debit card with a monthly spending limit for that card equal to my bill. It seems to still be giving me the AutoPay discount but I’ll wait and see when my May bill comes in a few days.