So I just switched to ATT from Sprint and ordered a new phone for my mom and got myself an iPhone 3GS. A friend of mine who works at an ATT store told me I will get my iPhone quicker if I just order it straight from an ATT store in person. I was busy and didn't have time to stop by the store so I just placed my order online. My mom told me she wants to add another phone to our family talk plan for my dad. When I try to go online and register on the ATT site it says there is an error and won't let me register. Can I just go to the ATT store in person and add another phone to my plan and also get my iPhone through them?