The physical memory capacity of hand-held limits how the communication software is written and implemented. Hand-held device operating systems are not are robust as those found in other computers causing changes in the how the communication software is applied. The technology squeeze comes in the fact that we are asking our hand-held devices to do as much as we do on our current desktop PCs and laptops. This is a complex task to accomplish. Three major limitations causing wireless PDA connection problems with other devices are network coverage, data throughput rate, and usage costs.
Wireless coverage is limited by two factors, service areas and technology capability.
Most metropolitan areas are covered by some form of data standard capability. The data standards that service providers can or will provide differ greatly in these areas. These service signals are very directional and limited in range. CDPD service provider infrastructure capitol structure investment is really heavy duty, ruling out the small companies. Coverage in most metropolitan areas contains one or more service providers using CDPD digital frequency capability.