PHB - Motorola Phone Book File holds information and addresses in the system. This works as a great backup when numbers are lost. The PHB - Motorola Phone Book File stores no images but operates as a connection to your computer to backup your phone files. PHB - Motorola Phone Book File is a storage system that keeps up with the important information in the phone. This back up tool through the use of a USB connection brings back the phone to its original state. PHB - Motorola Phone Book File Information in a phone may hold travel information and important notes and keeping this information accessible is important.