What type of storage does an iOS device use for user data?

What type of storage does an iOS device use for user data?Reference: https://www.ifixit.com/Answers/View/230162/Recovering+data+stored+on+NAND+chip+on+iPhone+6

Question:

What type of storage does an iOS device use for user data?

Options:

SSD

SIM

NAND

NOR

Correct Answer

The Correct Answer for this Question is

NAND