Iphone Unicom dongguan SMS center number setting, seeking god! ! ! ! ! ! ! ! ! ! ! ! !

hello, How to set/query/cancel SMS center number on iPhone:

Set SMS center number: dial * 55 * 7672 *+8613 * * * * * * # by calling

Query SMS center number: dial *#55*7672# by calling

Delete the center. 7672 *+8613 * * * * * # Press Call

If the SMS can't be sent or received, please analyze the reasons according to the following steps:

Step 1: Check whether the SMS function is available

Step 2: Whether the SMS center number of the mobile phone is set correctly

Step 3: Whether the prepaid user is within the normal validity period or whether there is sufficient balance <