Do all you can to buy an original iPhone, its worth the money. If you somehow endup with a bricked iPhone clone then this guide will teach you how to unbrick it.
How to unbrick an iPhone Clone Mediatek Android phone
* Download the firmware @ https://forum.hovatek.com/thread-13572.html
* Install Mediatek Preloader VCOM drivers on the PC using https://forum.hovatek.com/thread-440.html
* Flash the firmware to the phone using SP Flash tool @ https://forum.hovatek.com/thread-159.html