Why didn't watermelon frost, the fifth personality, send a text message?

The reason why watermelon frost, the fifth personality, doesn't send short messages is because short messages are intercepted by mobile phones as spam messages. According to official public information, the mobile phone of the fifth personality is a commercial mobile phone number. This kind of number is different from ordinary 1 1 digit mobile phone numbers, with as many as 15 digits. The harassing SMS interception of mobile phone will intercept this mobile phone number that is not 1 1 digit. The Fifth Personality is an asymmetric competitive game developed by Netease.