Yaa my friend Videocon infinitum z51 is not good for any one because this is a 3g phone which can not compet in 4 g world and most of the telecom company give there offer for only 4g user and second think is that this product has low clock rate some thing 1.2 GHz which is poor. and battery back is not good , no long it’s have only 2000 mh battery . Look is not so much impressive and no finger print sencer . at this prize I suggest xeomi mi 4a which is best phone at this cost , some people think xeomi does not provide us more serves station so there is some difficulty but user sutiicfide with it