I have a quick question , ok so I currently have an iPhone 5s 16 GB with T-Mobile and well I wanted to pre order the new iPhone 6+ from T-Mobile and well I was reading the FAQs and I read that if I get the iPhone 6+ from T-Mobile I have to go to an Apple Store or T-Mobile phone to activate it , well my question is can I just insert my nano sim from the iPhone 5s into the iPhone 6+ and get it activated? I have an unlimited plan with T-Mobile just in case it makes a difference.