Micromax x337 is very strong I use this mobile since 2013 .but yet my mobile is run easily new .iam happy.sound is very high and amazing .yes, micromax x337 is very useful and user friendly because micromax x337 life is long .micromax x337 design is good and style is good.this phone features is not satifaction this is not good in features .i not use any android applications in this phone .this is normal basic phone.