I have been using this about 2 weeks.and my experience say that it is a great phone.what I like:sexy and metallic unbody design.gorgeous 4.5”super AMOLED display with gorilla glass 3.responsive touch no lags at all.excellent battery life.noise cancelling microphones.non removable battery.external memory is also good.grand prime also have 5mp camera but a3 is having far better quality.it is slightly thicker.not so much heavy.there is some problem also like hanging.it is very common in samsung phones.a3 is having 4.5 screen which is very good.a3 looks exactly like the iphone.the os is fast and smooth.main is speaker is on back side of the phone and so when the phone is kept on the bed or sofa it becomes very difficult to hear it ring but in this range it is a very good product