Take the OPPO mobile phone as an example. Just click Add SMS directly on the SMS of the mobile phone, enter the contact information of the guest and edit the corresponding polite expressions and click Send. The specific sending methods and polite expressions are as follows:

1. Click the SMS logo button on the mobile phone to enter.

2. after entering the SMS interface, click the plus sign in the upper right corner to create a new SMS.

3. After the page jumps, enter the new short message editing interface and enter the guest's mobile phone number.

4. Click on the input box below the short message and enter, for example, Dear Mr. XXX, the number of boxes in the hotel you booked has been successfully booked. Please arrive according to the booking time. If you need to cancel your reservation, please contact so-and-so mobile phone number 19 and look forward to your visit! Click the send button after editing.

5. After the page jumps, you can see that the short message has been sent successfully.