求翻译：目前，在全球范围内使用最广的手机是GSM手机和CDMA手机。在中国大陆及台湾以GSM最为普遍，CDMA和小灵通手机也很流行，这些都是所谓的第二代手机，它们都是数字制式的，除了可以进行语音通信以外，还可以收发短信、彩信，具备MP3、 照相、录音、摄像、定位等更多的功能。外观上一般都应该包括至少一个液晶显示屏和一套按键，大致有折叠式、直板式、滑盖式、旋转式、侧滑式等几类，而且部分手机已减少了按键采用触摸屏。随着科技的发展，手机也向多功能、智能化方向发展。是什么意思？

At present, of the world's most widely used within the mobile phone is a GSM and CDMA mobile phones. In mainland China and Taiwan to most common GSM, CDMA and PHS phones are also popular, these are the so-called second generation of mobile phones, they are all digital formats, in addition to voice communication can also can send and receive SMS, MMS, MP3, photos, audio, camera, location and more features. Looks generally should include at least one LCD screen and a set of keys, roughly folded, straight-plate, sliding, rotation, such as sideslip-categories, and some mobile phones has reduced press using the touch screen. With the development of science and technology, phones into multifunctional, intelligent direction.