The firmwares are a bad joke, in short. When a cell phone with 10 (!) GHz CPU, I expect that everything runs smoothly. Comments such as "Do you have a the Engeriesparfunktion?" Can you save yourself, because that part runs without something from bad. Even regular reboots do not help. The phone is full of bloatware that nobody needed anyway. Instead the Touchwizzeugs, I would be happy about it, just to be able to use only standard Android. But no - so does not work that yes. After a few months late now been ported to the Android L S5, I was first excited about the new interface. The design I find really appealing. The problem is that Samsung has once again bungled the firmware. The most annoying thing is the performance: directly after the update was installed, I noticed that the mobile phone has ever required when you install updates from the PlayStore quite long, and this is also become quite hot. How is that possible when hardware and 10MB Apps, is beyond me. As nice as the new surface is also little joy comes in there when the first Notificationbar herunterruckelt, and WhatsApp first 3s opens by touching the Notification. The best way for Android L I find the multi-user and pin-to-lock feature. But with Samsung Yes None - the first one has been omitted. Certainly the last Samsung phone that I get.