Robert F. D'avello

Apparatus and method for alternative radiotelephone system selection

Method for providing entertainment to a portable device

Radiotelephone credit card data communications

Radiotelephone credit card call approval synchronization

Method and apparatus for detecting an alternate wireless communication network

Call routing system for a wireless data device

Method for providing entertainment to portable device based upon predetermined parameters

Data communication system with automatic power control

Dialing features for cellular telephone with standard telephone set

Radiotelephone telephone number down loading