The time was the early 2000s.

In the early 2000s, Taiwan's smartphone market began to rise, and some well-known Taiwanese mobile phone brands such as Acer and Asus began to launch their own side-sliding mobile phones. These phones usually have a thin body design and are equipped with a QWERTY keyboard to facilitate text input.

At the same time, it also has some basic multimedia functions, such as camera, music player, etc.