Hi I am Mayur.
The Samsung Z4 is not good phone at all. The sound reception is good but it is not user friendly. It works very slowly and hangs very badly. It also heats when it is connected to the charger. The style and design of this phone is average. The features of this phone are not good for a user. The RAM of this phone is 1 GB and it has 8 GB internal memory in it. The rear camera is of 5 MP. This makes the photos blurred. This phone doesn’t look good and the price of this phone is very high with these features.
So I recommend any better phone to buy than Samsung Z4.
Thank You.