How to cancel the automatic renewal of Unicom SMS?

You can only cancel SP business in the current month. If you don't want a business next month, you should cancel it in the last few days of this month, not the next day. Send it from 0000 to 100 10 and follow the prompts.

Otherwise, call customer service and press 0 to ask the operator to cancel it for you.

Good luck and hope to adopt it.