I notice that the home screen is customizable but not the four applications on the bottom, the call, email, browser and applications. How would I change those icons with different icons? Mainly the email and browser. Second question: How do I turn off or at least severly limit the data that goes to and from my phone. I do not have wireless and am just a bit paranoid about going over my data limit. I got the phone from work and this is my first smartphone so I am a bit nervous about anything I do on it. Also, does the instant messenger use data? Thanks for looking and thanks even more if you help me out.