If your Unlocked Mobile Phone or device supports Exchange ActiveSync, POP3, and IMAP4, you have a choice of which type of account to set up on your phone. Exchange ActiveSync is designed to synchronize e-mail, calendar, contact, and task information in addition to voice mail messages. POP3 and IMAP4 accounts are designed to send and receive e-mail messages. Finding Instructions for Your Unlocked Mobile Phone.
