Wireless asp systems and methods

A communications service provider provides wireless access to a packetized data network, such as the Internet (Figure 1, item 12). The service provider includes a server computer (Figure 1, item 14). The server computer is connected to the network, which is at least a wired network. A wireless ASP server computer (Figure 1, item 16) is connected to a wireless device (Figure 1, item 20) which communicates with a cellular antenna tower (Figure 1, item 18). Features of the network and server computer include group messaging, co-processors, dynamic protocol dictionaries, and cache synchronization and optimization.