https://blog.faceutil.com/2017/04/19/%ea%b0%a4%eb%9f%ad%ec%8b%9cs2-%ec%9c%a0%ec%9a%a9%ed%95%9c-%ec%96%b4%ed%94%8c-%ec%b6%94%ec%b2%9c-%ce%b6/
갤럭시S2 유용한 어플 추천 ζ