What kind of mobile phone is a 7-digit mobile phone?

Specific service number, customer service phone number, local fixed phone number.

1, specific service number: For example, some PHS service numbers are 7 digits, and PHS or PAS is a personal wireless access system. In addition, the wireless fixed telephone number of China Mobile Tietong Co., Ltd. is also 7 digits, which can only be used for answering and making calls, and has no network data function and short message function.

2. Customer service telephone number: The customer service telephone number of some large banks, insurance companies, express delivery companies and public service agencies is 7 digits, such as Bank of China, China Construction Bank, Agricultural Bank, Industrial and Commercial Bank of China, Ping An Insurance of China, SF Express, etc.

3. Local fixed telephone number: The 7-digit telephone number also indicates the number of local fixed telephone, especially the telephone without area code.