DI27 is phone book software that can dial a number stored in your PalmPilot's address book or synchronize the PalmPilot's address book numbers with a mobile phone. Communication is done via the PalmPilot's serial interface. If an infrared IrDA driver is active, communication is possible with phones that support the IrDA infrared standard. This version was only tested on Ericsson x888 and Ericsson 6xx or 7xx family phones with attached DI27 infrared modems. This updated version features the display of a "main" phone number type, support for Text Prefix to tag SMS messages to Mail Gateway, support for private Address Book and Memo Pad records, the addition of space before the number field code, and more.