What if my mobile phone card doesn't know the number?

After installing the mobile phone card into the mobile phone, check it according to the following steps:

Raw materials/tools: Huawei nova2

1. Turn on the phone settings after confirming that the sim card has been read;

2. Slide the setting page to the bottom and select the "System" option;

3. Select "About Mobile Phone" in the first line of the system page;

4. Scroll down the system page, find "status information" and click enter;

5. Find the "Network" option in the status information page, and then click Enter;

6. You can check the mobile phone number (usually with +86 before the number) in the "SMS Center Number" item. If the user's mobile phone is a dual-card dual-standby mobile phone, you can switch the "card 1" and "card 2" options above, so that you can know the card number in the mobile phone.