Final answer:
Flash memory, specifically NAND flash like eMMC or UFS, is the type of internal storage commonly used in tablets and mobile devices due to its durability, non-volatility, and compact size.
Step-by-step explanation:
The type of internal storage often used as internal storage in tablets and mobile devices is flash memory. Flash memory is a non-volatile memory storage medium that can be electronically erased and reprogrammed. It is widely used in many electronics due to its durability and ability to retain data without power. In mobile devices and tablets, a specific type of flash memory called NAND flash is commonly used because of its high storage capacity and compact form factor. Unlike traditional hard disk drives, flash memory is composed of solid-state chips, which means there are no moving parts, thereby providing better resistance to physical shock and faster access times. A common example of flash memory in mobile devices is the Embedded MultiMediaCard (eMMC) or the more advanced Universal Flash Storage (UFS). These are integrated directly into the device's mainboard, offering efficient and quick storage solutions.