Question:
I changed the secret code to #4779*, and then I made a call with number #1234* to show the icon of the app again, but it displays the error message:
Error performing request. Unknown Error.
I am in Pakistan.
Answer:
In most cases, the customers made a mistake to make a call with *4779# instead of #4779*.
Please start with symbol # and end with *.
It will fix the issue.
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