My son gave me his phone. Every time I send a message or make a phone call, people think that its my son calling. How do I change my phone to reflect that its me and not my son?
It depends on who you are calling. If you are making a phone call, the person you're calling will see the number... If that number is saved in their contacts as your son, that's who they'll see. Same goes for SMS messages, which get sent from your number as well.
So either you go to your carrier and get yourself a new number, you'll have to ask everyone to change their contacts from your son to you.