Why is there a short message on the mobile phone, and the friend who wrote you a flying letter wants to add you, agreeing to press Y and refusing to press N? What should I do? Will I deduct a lot of m

Why is there a short message on the mobile phone, and the friend who wrote you a flying letter wants to add you, agreeing to press Y and refusing to press N? What should I do? Will I deduct a lot of money? Hello, it should be that the other party is using Fetion service and wants to add you as a friend, so that it is convenient to chat with you by Fetion. If you agree to be his Fetion friend, reply to Y, if you disagree to reply to N, there will be a message fee for replying to this message. After the other party sends you a flying letter, if you chat with him directly by SMS, your SMS fee will be charged normally, which is the same as sending ordinary SMS. Please refer to.