How to cancel the SMS service of China Unicom?

If you need to cancel Unicom business, you can log in to the online business hall, and click self-service > business operation > new business operation > business unsubscribe on the homepage. The interface will display the business you ordered, and you can unsubscribe from the value-added business after finding the business you want to unsubscribe. You can also call the local hotline 100 10 or go directly to the local business hall to cancel.