Using your Nextel cellular phone, you can send and receive messages with images, audio, and text. You can send, receive, and save text messages as long as 500 characters. With the Instant Messaging feature of your Nextel cellular phone, you can communicate online in real time with users of AOL Instant Messenger, MSN Messenger, and Yahoo! Messenger trace a mobile phone number. Using MyNextel address book on your Nextel cellular phone, you always have instant access to all your business and personal contacts. Nextel cellular phones have a feature, called Mobile Application Manager, which allows you to wirelessly distribute custom or off-the-shelf Java applications.