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Samsung Galaxy 3 phone freezes and locks when making telephone calls

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http://forums.androidcentral.com – Finally found the culprit for this issue. The customized screen protector was causing the issue. The design of the screen protector allowed for a slight movement of the protector on the actual screen and slightly covered the proximity/light sensor. Removed the screen protector and the problem no longer exists. Hope this helps you all who are having the same issue. (HowTos)