I’m on the iUP so I just activated the esim on the new carrier. Wife’s phone is a paid off X so we just had to order her a SIM card. Pretty easy process and now our service is switched and we are prepared for upgrades.
we stayed with the current cell provider but opted for a more modern plan. saving +$40/mo!
-new plan is still unlimited but a 4g plan. Only bad is tethering / hotSpot bit rates are lower.
-keeping the same old iPhone of course
turn them (iPhone 11) over and they all look the same.