How to clear default settings in applications manager for texting etc.. on Galaxy S3

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http://forums.androidcentral.com – Hi there, I am having problems with clearing my defaults for texting, calling etc... when i press call a contact, it shows up complete action with call/skype and sends me to app manager, i go to all in app manager and select call and skype and clear defaults but it is still not working. I have also tried to reset app preferences but this also does not work, can anyone enlighten me? (HowTos)