Why do you get a "user busy" prompt when you call Apple?

Have you ever received a "user is busy" prompt when calling Apple's mobile phone? This actually involves the secret interaction between mobile phones and operators. This article will reveal this secret for you, so that you can better understand the principle of mobile phone call.

Secret interaction

Every time you make a phone call, the mobile phone will send a request to the operator to try to establish a call connection. But if the other party is on the phone or busy with other things, such as texting or browsing the web, the operator will tell you that the user is busy.

Network signal

In addition to busy users, network signals are also a key factor. Unstable signal or network congestion may cause the call to fail or receive a "user is busy" prompt.

Please try again later.

In this case, you might as well call again later, or call again at another place. If the problem still exists, you may want to contact the operator, who can provide you with more help.