Originally Posted by wonderbread
Will factory reset format the device? My inc has been running terribly slow and I just want to format the thing to give it a chance. I figure maybe fragmentation on the SSD, something like not having TRIM support or something can still lead the ssd to go slow after some time.
Its flash memory, there is no fragmentation. But doing a factory reset will help clean up unused files. It is also worth it to stick the SD card into a PC and format it to FAT32 (don't use a quick format option).
You never want to format the phones internal memory(quick way to a brick).