I had purchased a Samsung Z4 mobile almost 6 months ago.From my experience I can tell you that its sound reception is not good.The style and design is acceptable to me but it is useless to me because it is not Android version. So most of apps and game don’t support in this mobile. This is the main problem of this phone.It don’t have any good features that you could expect from a 4G mobile phone. When I use this mobile I fell very boring because it does not well.The value of the mobile phone is very high than its features. So I suggest you that not to buy this mobile.