Firstly really impressed by its build quality and its metal frame its gives premium look.also back panel is rough so grip of phone is good in our hands.front camera is decent for selfie.rear camera is good in daylight and low light purpous.64gb internal is too much for me so no need to external card slot.but it have not external card slot.for me its ok. 4gb ram makes phone really lagfree.even 25 up app running still phone didn’t hang for second.oneplus also conneted with users for updates.they gives upadates of oxygen os. after 2-3 months.battery backup of phone is also quite good.normal usage it runs 1 and halfday and in heavy usage 1 day battery backup.