Actually that's a standard Chinese KB with Pinyin, Chajei and Daiyi, etc. symbols. Note that Pinyin is only popular in places that people are fluent in Mandarin (and to use their vocal symbols), so it's rarely used in many places of teh world. It only depends on whether a person is familiar with which type of input method, for example, I never used Pinyin, and would use Chajei instead, others may choose differently.
Not to mention other methods just as "writting" teblets, etc.
Not to mention other methods just as "writting" teblets, etc.