How to calculate the phone bill for children's mobile phones and watches

The phone bill for children's mobile phone watches is calculated as follows:

1. basic package fee: children's phone watch equipment comes with a basic package, including talk time, number of short messages, data traffic, etc. The cost of these packages is fixed every month.

2, talk time: children talk with a watch, talk time will affect the phone bill, the longer the talk time, the higher the phone bill.

3. Use SMS: Sending SMS will incur extra cost. According to the operator's policy, each message will be charged a certain fee.

4. Use of data traffic: Children's phone watches can connect to the Internet and use data traffic for functional operations, such as positioning and tracking. The use of data traffic will generate additional fees, which will be charged in megabytes (MB) or in the form of packages according to the usage. Telephone charges refer to the expenses incurred in communication services, mainly referring to the use fees of communication services, including talking time, sending short messages, data use and other related expenses of mobile phones, fixed telephones or other communication equipment.