Most commonly used are Polycarbonate due to its strength. Nokia just dropped theirs in favor of Aluminium, and Samsung uses it for their Galaxy S3...
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Most commonly used are Polycarbonate due to its strength. Nokia just dropped theirs in favor of Aluminium, and Samsung uses it for their Galaxy S3. polycarbonate is incompatible with ammonia and acetone because it dissolves in their presence. Alcohol is one recommended organic solvent for cleaning grease and oils from polycarbonate..