By physically reordering data into contiguous blocks, FBO can restore read speeds to "like-new" levels—for example, returning a degraded device to a 1900MB/s read speed. Market Implementation & Standards Implement File-Based optimization functionality - LWN.net
This fragmentation forces the storage controller to perform multiple "seeks" to read a single file, significantly slowing down app launches and system responsiveness. FBO Delivers Sustained Mobile Phone Performance
The host (phone's OS) identifies specific files or address ranges that are critical for performance. By physically reordering data into contiguous blocks, FBO
Even if data appears contiguous to the software, the physical flash memory (NAND) may store it in non-contiguous locations due to background tasks like garbage collection . FBO Delivers Sustained Mobile Phone Performance
The host asks the storage device for the current physical fragmentation level of those files.