Is it legal to deduct the phone bill by receiving SMS? Guangdong

First of all, press the mobile phone card to other mobile phones to see if you can send and receive short messages normally. If so, it's a mobile phone. If not. Just a business card or phone number. Go to the business hall first to check if there is anything wrong with the mobile phone card. Secondly, human customer service has been complaining about this problem, urging them and they will give you an answer.