Its a good phone.it has a good camera good finger print sensor and mediatek prpcessor is also very good.their is no lagging in this phone as yer.
But sometime it lags when gta and subway surf both simantaneously runs on it.it has a good screen size 720p of resolution is good.but I feel its camera quality is not enough for micromax like company.a middle or for average person its a gpod phone.
But for heavy users this phone is not enough as it has 2gb of ram which is not sufficient for heavy user and because of mediatek processor. It Will leads to update problem I know today it has android marsmaalow in it but I think it will not get more update.