What you are using now is only the basic function of CRBT music. The activity clock box of "Happy CRBT, Enjoy Music" is a service based on your basic function. The activity bell box is a special ringtone packaging product to thank users for their support. There are six latest pop songs in it, which are scrolled and played at the normal charge of 5 yuan/month; Thank you for your interest in telecom products. I wish you a happy life. If the above information can't solve your problem, you can also log in to Guangdong Telecom Mobile Mall () to seek help from online customer service, which is available 7X24 hours a day!