Abstract: A billing system and method for providing both business and personal data access to a user of a wireless communications device is provided. A user enters an access request, and it is determined if the access request is a personal type access request or a business type access request. Personal type access requests are processed in order to provide billing for the personal requests to the user of the wireless communications device, and business type access requests are processed to provide billing to the business. Such systems and methods provide enhanced convenience to mobile workers while avoiding additional costs associated with such services being incurred by the business.

Abstract: A wireless device is provided to act as a caching data proxy for a first device, which may or may not be wireless. In particular, a cellular telephone is associated as a caching data proxy for a wireless portable computing device. The cellular telephone caches data as a proxy for the portable computing device when the portable computing device is either out of network coverage, powered down, or the like.