To send SMS to a UK mobile phone number, you can follow these steps in English:
1、Open your messaging app on your phone or computer.
2、Input the recipient’s mobile number, making sure to include the international dialing code for the UK, which is "+44".
3、Type your message in the text box.
4、Select the "Send" button to send the SMS.
Please note that you need to ensure you have sufficient credit in your messaging app or mobile phone plan to send the SMS. Also, ensure that you have the correct number and that the recipient’s phone is either turned on or capable of receiving text messages.
