It also provides up to 6 MB of email storage, and users with AOL accounts (not included) can sign on and access, manage, and set up as many as three different POP3 e-mail accounts and use AOL Instant Messenger to chat with anyone on your AOL Buddy List. The device also sports a customizable address book that lets you give favorite contacts their own ring tones, blinking light, and their own caller ID picture, taken with an available attachable camera. The camera also works for taking pictures of just about anything else that strikes your fancy, for easy storage or emailing to other interested parties.

The Sidekick's PDA functions include wireless synchronization to your desktop, configurable notifications to alert you to important events and information, a personal information manager (calendar, address book, notes, etc.) backlighting, a clock, and a thumb control for the included arcade-style games Rock & Rocket and Snowbored.

Cell phone features include a text message indicator, voice mail button, voice mail indicator, volume select/display, and a signal strength indicator. Cell phone features include built-in paging, caller id, conference calling, call waiting and call hold, customer care, access to directory assistance, emergency calls, detailed billing, voicemail with message alert, call forwarding, international dialing, call restrictions, lock alarm, call timers, redial, missed call indicator, call log, any-key answer, auto-answer, auto-redial, speed dial, mute control, no-answer transfer, one-touch 911, vibrating ring, and differential ring. Its phone book capacity is 2000 entries.