As long as they let the phone charge with the same USB-C chargers as used for other gadgets. I have one older Apple product (a child's toy at this point) which

As long as they let the phone charge with the same USB-C chargers as used for other gadgets. I have one older Apple product (a child's toy at this point) which simply says "Unsupported accessory" or such and refuses to charge through a particular generic Lightning cable (which another Apple gadget charges through just fine).