Is it possible to use my daughter's phone number on my phone? If so, can I do that, or does that mean her phone will be assigned my phone number? What about an iPad? Can I use my phone number on my phone and her phone number on her ipad for texting purposes? I'm guessing it's not possible to have both numbers assigned to my one phone at the same time? Her phone is being fixed and will be unavailable to her for a few days. I don't text all that much, but she does and doesn't want to miss anything important.