And why can't I see the information sent by this number and the secondary number on my mobile phone?

How to use Android mobile phone and multiple secondary numbers to make calls/send messages: After you successfully handle multiple secondary numbers, it is recommended that you download multiple secondary numbers and use them through multiple secondary number clients. 1. Call: Click the button in the upper left corner of the dial in the multi-number mobile phone client, select the secondary number to call, and you can dial the secondary number. 2. Send SMS: Send SMS on the multi-phone client. In the interface of editing SMS or SMS dialogue, click the button on the left side of the input box and select the secondary number to send SMS. Similar to the process of dialing, you can send short messages with secondary numbers.