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Showing posts with label blocked. Show all posts

Common GSM Codes or USSD Codes and Their Use

These are some of the common GSM service commands (or service codes), also called USSD (Unstructured Supplementary Service Data) codes and their use.

Call Redirection


*#61# To check status of redirection of all incoming calls, if there is no answer.

##002# To Cancel redirection of all calls

Call Waiting or Holding