SMS function cancelled. What are the tips for others to send messages?

If you cancel the SMS function, others will receive an error message or a failure message when sending a message. According to relevant information: SMS is usually transmitted through the network of mobile operators, and it needs the support of your mobile phone service provider to be transmitted normally. If you don't subscribe to the SMS service plan, you can't use this service, and the SMS sent by the sender can't reach your mobile phone, and a prompt will appear.