How can Unicom users activate the function of SMS to remind users of missed calls?

Take Shanxi as an example: At present, China Unicom has the function of reminding people of missing words. Cost: 3 yuan/month

By default, the service is turned off or missed when it is out of service area, and the opportunity will receive a short message of the calling number within 48 hours. Avoid missing calls.

Tips: Due to the differences in policies of different cities, if you need to know more about the relevant business content of your location, you can consult the local Unicom business hall, which is subject to the local business policy.