How to judge whether the other party is turned off? Here are three ways to help you solve it.

1. Generally, the answer for refusing calls is "The line you dialed is busy". "The number you dialed is not answered at present" and so on, and there will be no answer prompt to turn it off. 2. By sending SMS, if the actual SMS is sent successfully, it will not be turned off. Generally, the SMS that is turned off will be fed back after it is turned on (SMS delivery reminder service is required). 3. You can judge whether the other party is turned off or the automatic reply of software settings by the response time of the landline phone.