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Re:Don't tell people to turn off Windows Update by TeMPOraL on Monday May 15, 2017 @10:11AM (#14341687)
I had this problem all the time on a Galaxy S4. I don't remember now whether this was a 16GB or 32GB model; either way, it quickly filled up pretty much entirely by system data and apps. Having an external SD card for everything else didn't help much, and I spent over a hear with phone storage hovering barely above 500MB (if you go below, half of the stuff on the phone refuses to work).
Re:Don't tell people to turn off Windows Update by digi_owl on Monday May 15, 2017 @11:08AM (#14342135)
Another interesting tidbit is that as storage fills up, Android slows down.

I suspect this is an artifact of using the Linux kernel. As said kernel puts a focus on IO ops, and the EXT file systems spend a whole lot of time looking for contiguous free space before committing a write.

Thus if your app do a bunch of writing (say syncing local data with the cloud) at start, it will start quite slowly on a near full Android device.

Re:Don't tell people to turn off Windows Update by vetinari on Monday May 15, 2017 @06:05PM (#14345554)
In the past, many Android devices had problems with the quality of the flash - as it aged, it also slowed down. Occasional reset and full trim helped for a while, until it didn't help anymore. The poster children of this problem were Asus Transformer Prime and the original Nexus 7.