Growing out of my cell phone

I think you are gaining independence...from your friends. The reason why teenagers talk so much on the phone is because they need to get approval or advice from their friends. Have you ever found yourself thinking "I wonder what so and so would do about this?" and then call them in the middle of a decision making situation? Every thought a teenager has needs to be shared with their friends. Its just all part of puberty and that stage. Your friends and their thoughts mold you and you mold them. Now you feel more independent and probably more secure about your decisions that you dont feel like you need validation for them. I dont know...I might be way off, but that is what i think. Celebrate your independence!!!