Consider an EMMC,as a like a storage device like hard drives in laptops. Emmc is a reprogrammable storage device ( multimedia card) found in your phone that stores the Os .........it is also known as the flash IC(Integrated circuit ) in your phone
Which stores your operating system, the other compartments, including the preloader and kernel files, ext storage for the user , the internal storage. You have aside the SD card.
They are mostly called reprogrammable IC because you can delete their data and rewrite them back. Delete the os by full formatting including bootloader and still rewrite your Os files to get the phone working again
Before, emmc was made, we use to have NOR CHIP, NAND CHIP....
NOR CHIP, have memory allocation up to 32MB whiles beyond were the NAND CHIP some even up to 128, 256mb or 512mb
Most phones in the market have NAND flash ICs.....EMNC Flash ICs too...
Emmc has 512 and beyond to about 4gb of ram these days.
BEFORE YOU SOLVE EMMC problem
1. Have acquired basic electronics skills
2. Gsm reverse engineering which includes boot repair with Gsm box
3. A rework station and more...
EMMC repair is a PROFESSIONAL technique and cannot be done any how, or the entire PC will be damaged
If your device cannot boot, you might be thinking of EMMC problem, please kindly take the device to a REPAIR CENTRE FOR A POSSIBLE replacement or fix
Sent from my INFINIX-X551 using Hovatek mobile