When smartphones have become an indispensable part of daily life to a lot of people, do you still remember these vintage phones you once used? /VCG Photo

Slide phones, flip phones, bar phones... About 500 cellphones of different shapes and from different eras are displayed this week at a shopping mall in central China’s Zhengzhou City, Henan Province, showing the relatively short history but rapid evolution of the device. /VCG Photo

A certificate had to be obtained first before owing a mobile phone in the 1990s in China. /VCG Photo

As the largest mobile phone market in the world, China saw a decline in the market in 2017, after eight years of consecutive growth. /VCG Photo