Phone watches are not allowed to dial this number. What do you mean?

Hello, there are several specific reasons: First, the number is blocked by the other party's mobile phone filtering software, such as blacklisting the number. Second: I have made some settings on my mobile phone, which makes me unable to call this number. The possible situation is to put the other party on the blacklist of your mobile phone. Third, the mobile switch does not maintain your landline information. When a mobile user dials, the mobile switch can't find your number segment, and it may be able to dial later. Fourth: Some mobile phones have call forwarding when the phone is busy, and the forwarding number is empty. I hope my answer is helpful to you!