This document explains what a megabyte is, and how they impact data usage and billing.

• Data size is measured in byte, kilobyte, megabytes, or gigabyte units.
• Use the calculator at www.t-mobile.com/calculator to help determine what feature best meets your needs.

• You should check your web usage frequently from one of the following locations:
  • My Account
  • My T-Mobile
  • T-Mobile automated system
• Use the calculator at www.t-mobile.com/calculator to help determine what feature best meets your needs.