You have already had the opportunity to try Android Lollipop 5?
I'm trying the porting to Xiaomi Mi2 for almost a week now and I must say that - despite being a test version - it is very nice and functional, but also fluid at the same time. The innovations introduced were several, however - despite the various previews released - the first official version arrived on our terminals with some problems.
On the net some users complain of a low battery life, some blogs have reported the impossibility of setting the silent mode and so on, but at the same time we also talk about a new version, Android 5.1, which will most likely solve these bugs.
One of the problems that I have found concerns one of the new features: the pine of applications, or lock on screen in Italian and should only concern devices with physical buttons. I had described the function in this article, where I have also listed all the features a bit.
Il pine of an application (which can be activated through the settings, therefore disabled by default) allows the user to lock the screen on an application through a special key visible in multitasking.
So far so good: I open multitasking, plug the button and block the use of the smartphone on that particular application and no one can use others without knowing my sequence; the problem occurs at the time of unlocking: to access multitasking on the Nexus and on all devices with virtual keys there is a dedicated key, then accompanied by the home and back button (the navbar to be clear). With the physical keys, however, the key to access multitasking is simulated by prolonged pressure on the home button in most terminals, and here the situation becomes complicated.
To unlock the "pinnata" application, press the button simultaneously back e multitasking (overview), but as we have said the latter is simulated with a prolonged pressure, then the phone cannot be unlocked, if not restarting it.
In fact, this may NOT be a problem for Google as the Nexus and most Google Play edition devices come with virtual keys. It is therefore - as I see it - for brands and custom ROMs to change the shortcut for unlocking or allow you to remap the physical keys. But, of course, we already know that the CyanogenMod allows both key remap and virtual key simulation, so there should be no problem, or so hopefully!