From the May 2009 issue of Entrepreneur

Trying to decide between a BlackBerry and an iPhone? Take this quiz to find out which one's for you.

1. Which feature is most important to you in a mobile phone?
a. Top-notch security
b. A slick interface

2. When on the go, what do you need most?
a. Turn-by-turn directions to client meetings
b. Info on nearby businesses

3. Which do you use more?
a. IM
b. SMS

4. How often do you need to check your e-mail?
a. If it's not instant, I feel behind.
b. Every 15 minutes or so is enough for me.

5. Are you a major multitasker?
a. I have as many programs open as possible atany given time.
b. I prefer to do one thing at a time, thank you.

6. Which wireless carrier are you partial to?
a. I like to keep my options open.
b. AT&T is it for me-despite famously bad coverage.

7. Do you like customizing your gadgets?
a. I want them to do everything right out of the box.
b. I love finding new apps and add-ons to increase productivity.

If you answered mostly As, you want a BlackBerry to tap into its leading-edge enterprise functions and cross-carrier flexibility.
If you answered mostly Bs, pick up a sleek and sexy iPhone for a stylish, customizable mobile experience.