How does iPad receive information from Apple's mobile phone?

The specific operation steps for IPad to receive Apple mobile phone information are as follows:

1, iPhone and iPad turn on Bluetooth respectively.

2. Open Settings in the iPad, and then click General in the Settings field.

3. Click "Switched and Suggested Applications" in the General bar to make sure that the Switch function is turned on. (iPad and iPhone devices must log in with the same Apple ID).

4. On the ipad, open the "Info" application, and the system will pop up a dialog box for entering the verification code. At this time, return to iPhone, enter the verification code on iPad in the pop-up dialog box "SMS Forwarding", and then select Allow, and the verification process is completed here.