Apple Iphone 4 was good only 6 years back when it was released, but now compared to the other smartphones in the market, I wouldnt recommend this.
It lacks a lot of the popular features today like the fingerprint scanner, expandable memory, dual sim, which are available in many other smartphones which are a lot cheaper than the apple iphone 4.
The design of the phone is nice tho, all glass body gives it a classy look.
The screen size is really small. I would recommend a smartphone of atleast 4.5 inches
Overall, I wouldnt recommend this phone as it isnt a value for money, look for other cheaper alternatives in market or if you looking for Apple devices, go for Apple 6 or above.