First thing you realize is the small font size in several apps, such as Facebook. Barely readable.
Tried to use larger font size in settings. That did some effect on some fonts, but no consistent result.
Same with the Big Font app - font sizes and overall appearance becomes inconsistent.
So the only way seemed to change DPI Settings. Which required rooting.
I did the CF autoroot thing. And fiddled with DPI settings using Texdroider app. Originally was 220 DPI. I tried 420 DPI.
Unfortunately after reboot, I was stuck at "systemui angehalten" error message, and touch screen did not respond to input.
Unfortunately I could not switch off the device (to reboot), pressing power button for ever gave no effect.
Since you cannot remove the battery on this device I had to let it run down completely over night. Then booting into Recovery (or Download Mode) was possible again.
Tried a full wipe in Recovery an rebooted. But endless systemui crash loop remained.
Will try to re-flash via Odin to get it back working.
So this thread is firstly a warning if anybody wants to change DPI settings on the Tab S.
Then some questions:
* Did anybody overcome the small fonts problem by changing DPI and which DPI setting is advisable?
* any way to force reboot in such case?