The most horrible thing Samsung has ever built (1 update)

Updated on 04.21.2015:
After I had also sent the 2nd Galaxy S6 (with activated 'Smart Stay' constantly flickered the display), it was pretty hard to get another - sold out everywhere and in queue.
Until me a friendly provider partners an S6 could get ungebrandet.
This I now have 2 days in test and can now posiven here Reviews understand and confirm.
If it stays that way, I will keep it well - my review I have only once increased by 2 stars.

Either I have a 'Monday-device', or Samsung really has forgotten how to build androids.
After I was not particularly impressed by the S4 and S5, I now have absolute scrap in his hand:
The lack of SD card slot and the non-removable battery are shortcomings, which have been known before but, and must accept, if you will absolutely have a Galaxy. Appearance and feel are good to very good. Initial Setup with an existing Google and / or Samsung account run quickly and smoothly. After about 90 minutes I had everything on it, incl. The necessary system updates.
But then came the shock and the horror: Approximately every 3 app is stopped again after the start and can not be executed. A data level restore with 'Carbon Helium' is not at all possible. In Google Play Goals I can not look for apps because after you click on the magnifying glass the keyboard opens briefly and immediately closes again - voice input at this point impossible.
Also a reset and a completely new installation without accepting the Google account have not helped.
It should be also noted that all the disputed issues on a Z3 with Xperia Android 5 not occur. So it can not be on the Lollipop.
I'll return the device and try another again.
I hope I have better luck with it, and the above-mentioned S6 was really an isolated case.