Do I need an adult with me to buy a phone?
I'm planning on buying an HTC at T-Mobile and my friend says I can't go without an adult -.-
You cannot sign a contract until you are 18. I have Verizon. I had to have a credit card and good credit to get my iPhone. Just call t-Mobile.
Depends how old you are. You will need a credit card.
Yes because some companys ask for identification .