Calling the other party for more than half a month has been temporarily unable to connect, and an exclamation point appears two or three days after texting? What is the reason?

1, the other party's mobile phone has no signal. If the mobile phone you dialed can't receive the signal temporarily, this prompt tone will appear when calling the other party's mobile phone system at this time.

2. The other party has set up call forwarding. If the number you dialed has been set to transfer the incoming call to an empty number, this prompt tone will appear when you call the other party because the system can't search for valid information.

The other party took out the SIM card without turning it off. If the owner forcibly takes out the SIM card without turning off the phone, this prompt tone will appear when you call the other party because the owner information cannot be searched.

4. This prompt will also appear when the phone is set to airplane mode.

Temporarily unable to connect should be that the called mobile phone is out of service area or abnormally turned off, in short, there is no way to contact the other party. For example, if the other party doesn't want to answer, the principle is to turn to the empty number or the shutdown number, or blacklist the calling party to listen to total recall. However, the blacklist is mainly automatically intercepted by the software, and there will still be a connected sound before hearing the prompt tone.

Hope to adopt