How to set up Apple 4s Unicom SMS Center?

The number of Unicom SMS information centers varies from province to province. Users can call the local Unicom customer service telephone number 100 10 for consultation. How to set the SMS center number on Unicom card: After the user chooses to enter the "SMS" menu of the mobile phone, enter the SMS center number in the "SMS Center Number" column, and press the OK key, the number will be stored on the user's card, and the SMS and various services can be used directly without resetting.