1 14 should be the most common, living in knowledgeable people. 1. According to Baidu Encyclopedia, 1 14 directory assistance is operated by China Unicom in the south (1 165438) and China Telecom in the south (165438). 2. At present,11614 has been opened: hotel reservation, air ticket reservation, catering reservation, educational navigation, lost and found, and enterprise switchboard (enterprises can register their company telephone number as1165438. It provides online learning consultation and education information for users through fixed telephones, mobile phones and the Internet. Yes116114 telephone navigation, which is the only column section that has completed the national unified key pressing, greatly enriching the telephone navigation (1 16 165558). Thirdly, in combination with users' needs, "Educational Navigation" has launched five products at this stage: interactive tutoring, daily English, interactive teaching AIDS, campus news, and high school entrance examination guide. Among them, the daily English section has built a simple and functional oral English communication platform for the whole people to speak English. With the innovation of business, it will be merged into 3G strategy in the future to launch more comprehensive services. This is a difficult problem that you don't understand. What phone number can you make? The answer. 804