In this day and age, when our smartphones can pinpoint our location, record our Internet searches, and track our conversations, it's hard becoming a powerful drug kingpin if you're stuck using a regular smartphone for all of your drug-related deeds. If you're trying to take your small time dormitory sales to the big leagues, you should invest in a prepaid cell phone. Why? Since there's no contract or anything tying your name to the phone, it's difficult to prove who is using it. Plus, since you'll constantly be changing your number to evade the police (it may come to a point where you're using 35 disposable phones per day—like Walter White.