The number you dialed is temporarily unavailable. We will send it by SMS.

Because the reception and transmission of cell phone signals are transmitted by wireless signals, we know that metal will absorb radio waves. When the communication signals between some buildings and the underground are weak, or most of the communication signals are absorbed by steel bars, the mobile phone cannot receive these weak signals, so there is a situation of "unable to connect".

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. When you hear that the mobile phone can't be connected for the time being, it may be that the other party has set up an incoming call firewall, or it may be caused by the above reasons.