本文介绍北京市、上海市、广州市三地市话网号码升位的具体方法。北京市7位升8位,在原号码前加“6”。已是8位电话号码和特种服务的号码不变。上海市7位升8位,在2、3、4、5字头前加“6”,6、7、8、9字头前加“5”。移动电话号码同时升位,在9字后面加“1”。广州市7位升8位,原“8”宇头电活号码在首位后插入“1”,原“2”至“7”字头电话号码在首位前加“8”。 This article describes the Beijing, Shanghai, Guangzhou City, the three cities in the number of specific ways to lift the network. 7 in Beijing rose 8, plus “6” in front of the original number. It is the 8-digit phone number and special service number unchanged. Shanghai 7 rose 8, in front of 2,3,4,5 prefix “6”, 6,7,8,9 prefix before the “5.” Mobile phone number at the same time rising, in the 9 words plus “1”. Guangzhou City, 7 rose 8, the original “8” Yu Tau The number inserted in the first place after the “1”, the original “2” to “7” prefix in front of the first phone number “8”.