Joke Collection Website - Blessing messages - Why do SMS and call records stay in May 1 1?

Why do SMS and call records stay in May 1 1?

Take the customers of Henan Mobile as an example. Customers must use "service password+random SMS code" to query the detailed list. They can query the detailed list of the last six months (including the current month) through the front desk of the business hall, online business hall, self-service terminal and wap website. In view of the different business regulations in different provinces, you can call local 10086 to get more help manually.