Data Units Read : 1267900331 (649.16 TB)
Data Units Written : 904681650 (463.20 TB)
power_cycles : 667
power_on_hours : 9611
and yet it's still only:
available_spare : 100%
available_spare_threshold : 99%
percentage_used : 16%
I don't expect it to fail anytime soon.
It’s a pretty bad idea to keep valuable documents on a mobile device. You can’t recover the data from socketed storage if it’s lost or stolen.