Ive been using this phone for a week now Ive observed no complaint until now. The phone is very thin and light weight and require you to buy a cover separately. Battery is pretty impressive considering the price point. Through random usage the phone lasts a day for me. There is no hearing issue on my phone until now.
The best thing Ive noticed during my usage was it shows no lagging whatsoever. This time Samsung manages to pack phone with a better pair of head phones. Although Ive rarely used them. The charger is of 2A & charges the phone very quickly.
And finally if you are an audiophile get a good pair of headset and this phone will do wonders in your ears.