Appleid adds a trusted device.

To add a device to the list of trusted devices for Apple ID, you can follow these steps:

1. On iPhone, iPad or iPod touch, open the settings application.

2. Click on your name, and then select "Password and Security".

3. Click Edit Trusted Phone Number.

4. Enter your Apple ID password for verification.

Under Device Trust List, click Add Trusted Device.

6. If your setup uses two-step authentication or two-factor authentication, please verify your identity.

7. Then, you will be asked to choose a verification method, such as by SMS or by looking up my iPhone function.

8. You can select the device to add and the verification method.

9. After setting up, your device will be added to the trusted device list of Apple ID.

Please note that each Apple ID can add up to 10 trusted devices. If this limit is exceeded, you need to delete some old devices before adding new ones.

I hope these steps will help you add devices to the list of trusted devices in your Apple ID. If you encounter any problems, please try to contact Apple Customer Service for more detailed help.