Dongguan Unicom SMS Center will be closed soon.

Hello, how to set/query/cancel the SMS center number of iPhone:

Set the number of SMS center: dial * 5005 * 7672 *+86130 * * * * * # with iphone and press Call.

Check the number of SMS center: dial *#5005*7672# with iphone, and press Call.

Delete the center number: dial # # 5005 * 7672 *+86130 * * * * * # with iphone and press Call.

If the short message cannot be sent or received, please follow the following steps to analyze the reasons:

Step 1: Check whether there is a short message function.

Step 2: Is the number of SMS center set correctly?

Step 3: Are prepaid users within the normal validity period or have sufficient balance?

Step 4: Is the inbox full?

Step 5: Have you changed your mobile phone?