Why only use SMS to inquire about mobile phone packages and telecommunications?

In order to facilitate customers to inquire about the usage of packages, account balance and telephone charges, China Telecom launched a short message inquiry platform. 1000 1, you can directly send the corresponding query instruction to 1000 1 on your mobile phone, and you can receive the relevant content replied by the telecom short message platform in a very short time. Telecom's SMS query instruction is:

10 1- real-time phone bill.

102- account balance.

103- Last month's bill.

104- Historical bill.

105- integral query.

107 points exchange record.

108- Package consumption inquiry.

1 10- payment record.