It has a special meaning: the first 6 bits are network codes; The 7th digit is the service access number; The eighth bit is the function bit of SIM card, which is generally 0, and the prepaid SIM card is 3; The 9th and 10 are the province codes; 1 1 and 12 are year numbers; 13 is the supplier code; Numbers 14 ~ 19 are user identification codes; The 20th bit is the parity bit.
You can try the following methods to check the card number of the local SIM card:
1, call the customer service of the telecom company to check your local phone number;
2. What is the personal mobile phone system? If it is Android, you can go to the system information, and you can see your number with a SIM card information.
3. Open the SIM card application of the mobile phone and you can see your number.
First, install the SIM card that needs to query the phone number into the mobile phone, then find the setting application icon on the desktop, and then click to enter the mobile phone setting page.
2. After entering the settings page, find the options of dual card and mobile network, and click Enter.
3. On the page of dual card and mobile network, find the module of SIM card information, where you can see the mobile phone number information of SIM card.
4. In the corresponding SIM card options, the system will automatically detect the mobile phone number of the SIM card and display it in the options, thus obtaining the number of the SIM card.