Is it illegal to borrow someone else's mobile phone to send messages?

Dear, I'm glad to answer this question for you ~ It's illegal to send messages on other people's mobile phones. If information is not illegal, it is not illegal. It's okay to joke with other people's mobile phones. At most, others will tell you not to send it in the future. If you use someone else's mobile phone to send some yellow pictures and send false information to cause people's panic, it will violate the law, and everyone knows the consequences of breaking the law.