精选优质文档-倾情为你奉上 手机发展史With the modern technology developing,the mobile phone becomes more and more popular in our life.Sometimes we find out that we could hardly do anything without it.The idea for cell phones has been around for a lot longer than the technology to make them. As soon as the first landlines (固定电话) came into use, people had the idea of improving the convenience of this new communication medium, and of bringing it to new areas such as cars. In 1995 mobile phones used to loo
