How does ipad Cellular receive SMS?

The method of receiving SMS for ipad mobile version is as follows:

The cellular version of iPad supports cellular network, and can use mobile phone number for communication, including receiving short messages. In the iPad settings, you can turn on the "Cellular Mobile Data" option and make sure that the SIM card is plugged into the device. Then, in Settings, select Messages to enable the iMessage and SMS Forwarding options. In this way, when someone sends a text message to your mobile phone number, the iPad cellular version can receive the text message.