Tip Trik Nokia Symbian certificate error
Just For sharing what i get n experiance..how-to-fix-certificate-error, here is folow this step one by one
Find the application manager on your phone “App. Mgr.” usually located in “Settings” or “Tools”. Open it, select “Option” then “Configuration” or “Settings” depending on what version you have. Then under “Software installation” change the “Signed only” to “All” and you are done.
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