Using the Pinyin input method to type on the phone, using the standard Pinyin or setting up a vague Pinyin was mainly dependent on personal preferences and habits. The standard Pinyin was usually more accurate and could be typed out quickly and accurately. However, it might not be convenient to use the standard Pinyin for some uncommon Chinese characters or Chinese characters with poor pronunciation. Setting up a vague Pinyin could make the input more flexible. It could infer the Pinyin of Chinese characters according to the context. For some unfamiliar Chinese characters or Chinese characters with vague pronunciation, using a vague Pinyin was more suitable. Using the Pinyin input method to type on the phone, using the standard Pinyin or setting up a vague Pinyin was mainly dependent on personal habits and preferences.