Well, I haven't actually done it yet. I've been paying my phone bill with Monero for several years with gift cards, but the carrier I'm switching to doesn't require me to use a gift card to pay it in Monero.
I've been using prepaid and my current service is finished on the 26th of this month and so I'll probably actually perform the switch around the 20th so that I don't lose much of my time. My phone does not support Esim so I'll probably actually place the order on like the 15th, and by the time the Sim gets to me, it will be something like the 20th or so.