Support New into Android

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http://androidforums.com – Hello guys. like tittle say i'm new into androids phones. i came from nokia. i have a Galaxy Ace s5830M. i have read that are different types. the s5830, s5830i. but i have not seen mine with the "M" at the end i was wondering is the s5830m is the same as the one without the "M". can any expert tell me more about it? what CR i can add to my phone. my phone have like 1month already and still stock. ty.. (General)