Is it illegal to send a prank message to a friend? Tell him to pick up the courier.

According to the Public Security Administration Punishment Law, if a certain person repeatedly sends obscenity, insult, intimidation or other information to interfere with the normal life of others, he shall be detained for up to five days or fined up to 500 yuan. If the circumstances are serious, they shall be detained for more than 5 days 10 days, and may also be fined up to 500 yuan. Freedom of speech is a right, but everyone should be responsible for what he says, and must not infringe upon the legitimate rights and interests of others and affect their normal life.