| Summary: | With the promotion of 4G communication technology, wireless bandwidth and transmission speed can be improved greatly, which provides a good platform for intelligent mobile phone terminal to add application function more rich content.
With the technology evolution, the way people communicate is rapidly change recently. Mobile communication change from traditional sms to QQ, WeChat, Facebook become more and more popular on android system based smart phone. But these application does not address the issue of data security, all the data transmission is plain text and hardly protected through a secured channel.
The android system is open source mobile phone operating system -- Android Google Corporation, a new system based on Linux platform, using Java language, Eclipse for development tools, learning through the system architecture and the application of the platform, design a Android based Instant messaging application that has well designed secure feature
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