How to open SMS service on Unicom mobile phone card?

The SMS function is usually turned on by default and no application is required. If this function is not enabled, you can contact the local manual customer service or go to the local business hall to enable it. Secondly, you need to set the correct SMS center number to use the SMS function normally. Half-year traffic is not cleared across months and is valid for half a year. Click /sAAGm to enjoy a 20% discount!