Removing phone # from child's iPad
With my kids using the same Apple ID, I'm concerned with the presence of my phone number on their iPads. I understand that I can go into settings and uncheck the number. However, on more than one occasion, after updating the operating system or using a foreign wifi, the iPads have reset and all of the sudden, my kids start getting my text messages.
Does anyone know how I can completely remove my phone number from the machine?
iPad 2