EXT4 is the most common file system found on Android devices. This file system is not only popular among modern smartphones, but it is the most commonly used Linux file system. Updated features in EXT4 were added, and the most well-known included encryption. Unlike older EXT versions, there is no 4 GB size limitation for file storage. While this file system is extremely stable, the use of journaling, if enabled, can wear down the device faster than if journaling is disabled.¹

Reference:

[1] https://for585.com/extfilesystem