micromax a 57's class 10 compatibility!!

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http://androidforums.com – hey friends ! as bought a new micromax and coz of low ram problem got it rooted and used swap memory thru sd card i faced issues like:- 1. lag nd hanging of phn 2.even after installing 3d chainfire pro couldnt play hd games. i currently have 4 gb class 4 memory card.. in order to avoid these probs i am going to buy a 16 gb class 10 memory card.. Can u plzz guide me whether my phone is compatible with class 10 or not.coz ppl say low end smart phones r not compatible with class 10. (General)