This question already has an answer here:
As the subject indicates, does Android support any of the Extended File Systems ("ext", "ext2", "ext3" and "ext4") for removable storage cards (such as Micro SDXC storage cards)?
Android is a Linux-based operating system, so surely such filesystems would be supported?
My question relates to both Android 4.4-4.4.4 ("KitKat") and Android 5.0-5.1.1 ("Lollipop"), as I am just about to buy the Sony Xperia Z Ultra which runs the former, but has an upgrade available for "Lollipop"...
The reason I ask is because Extended File Systems have a number of distinct advantages over Microsoft filesystems, and I do not use Microsoft Windows-based operating systems at all (well, at work I do - but personal stuff can't be used with their computers...), so it's only logical to utilize Extended Filesystems where possible, for the technical advantages.