What is the default ringtone of China Mobile?

Xinjiang Mobile will automatically replace the default CRBT twice a month for customers who have opened CRBT but have not set up a CRBT library. After the replacement, two default color ringtones of the current month will be played circularly, and the customer does not need to set them.

Because the color ring tones will be changed every month, and every month will be different. Want to know the current CRBT, you can inquire or consult through the migu music client or 12530 migu music Station. Call 12530 to collect normal call charges.