  The Mobile intermittent wireless connectivity limits the evolution of the
mobile landscape, such that this progress coupled with the ubiquitous nature of
the Internet and the web services. The web service Reliability achieves the low
overhead communication and retrieves the appropriate state response from the
web service consumption. This paper discusses and analyzes the most recent
approaches that achieve the reliability of web services consumed by mobile
devices. Achieving the reliable web service consumption istended to two
approaches: Middleware approach and Mobile Agent(MA) approach. Both of them
focus on ensuring the request execution under the communication limitations and
services temporary unavailability.
