The Meizu MX5 comes with the custom-made Flyme OS, now in its 4.5 installment. It's based on the Android Lollipop 5.0.1 and it takes after its Chinese siblings and has a one-level interface with only homescreen and no app drawer, similarly to Apple's iOS.
The lockscreen on the Meizu MX5 is a pretty simple affair. You drag upwards to unlock and have the option of securing it with a passcode or an unlock pattern (or the fingerprint reader). There are no shortcuts on the lockscreen, but you can use a left or a right swipe to launch into a specific app directly from the lockscreen.
Gesture wake up is available - you can use pre-defined gestures to launch different apps while your phone is asleep - double tap to wake and swipe to unlock work by default, but you can also use swipe down, or other gestures such as Z, M, U, W, among others to launch apps of your choosing.
Holding down the home button will lock back the device. You can also assign a number of functions to tapping the home button - you can set it go back in the UI, close an app or go back to the homescreen.
The homescreen is even simpler. You get two panes by default but you can add more later on. The homescreen gathers all of your app icons and you can add widgets into the mix.
The notification area pulls down the whole way. You get a set of five circular toggles for various settings and you can expand them with a swipe down or with the dedicated virtual button in the top right.
The rest of the notification area is a basic list or expandable, actionable notifications.
Switching between tasks is done with a pull up menu from the bottom of the screen. It looks like iOS 6 in a way but works differently - you have to swipe apps up or down to dismiss them. There is also an option to pin an app (tap and hold) and it will stay always in recent apps at the state you closed it.
You can customize the UI with various themes. There are some preloaded but you can browse the App Center for more - some of them are paid but there are many free and a lot to choose from. There's also a variety of built in wallpapers.
There's a Do Not Disturb mode that will block notifications and calls and you can choose a white list of numbers that can get through. It can be scheduled to run at specific time intervals or be set manually.
There is one more option - Scheduled Power On and Off - you can setup your Meizu m2 note to shut down and boot up at a specific time on specific week days - just like alarms.
Flyme OS can be tough to get around at first but once you've gotten your bearings it becomes a treat to work with. Meizu is keeping things as simple as possible and everything works seamlessly without any hiccups.