Abstract: A caller information server provides caller identification (ID) information to a mobile device. The server receives caller ID information from local address books stored on multiple mobile devices. The caller information server aggregates the received caller ID information to generate a pooled address book. The caller information server may determine whether names within the caller ID information are legitimate and store or filter the information accordingly. When a mobile device receives a call from a telephone number for which it lacks caller ID information in its local address book, the mobile device sends a request for the caller ID information for the telephone number, to the caller information server. The server identifies caller ID information associated with the telephone number in the pooled address book, and sends this information to the mobile device.

Abstract: A caller information server provides caller identification (ID) information to a mobile device. The server receives caller ID information from local address books stored on multiple mobile devices. The caller information server aggregates the received caller ID information to generate a pooled address book. The caller information server may determine whether names within the caller ID information are legitimate and store or filter the information accordingly. When a mobile device receives a call from a telephone number for which it lacks caller ID information in its local address book, the mobile device sends a request for the caller ID information for the telephone number, to the caller information server. The server identifies caller ID information associated with the telephone number in the pooled address book, and sends this information to the mobile device.

Abstract: A system for providing to a user of a handheld device at least one of location-based information and time-based information includes a server assembly including (1) a server application and a server data storage medium; (2) activity site information periodically updated in the server data storage medium and pertaining to at least one activity site, the activity site information being correspondingly updated in a device data storage medium of the handheld device using a communication link between the handheld device and the server assembly; and (3) a client application on the handheld device adapted to (a) obtain reference location information identifying a reference location; (b) access the activity site information from the device data storage medium; (c) determine a relationship between the activity site information and the reference location, the relationship being at least one of a geographic relationship and a temporal relationship; (d) select at least a portion of the activity site information based on