Samsung of course doesn't use stock Android like a Moto G or a Nexus 5. Instead it has its own TouchWiz user interface layered on top. It's an approach that's drawn widespread criticism for its heavy-handed additions, unnecessary apps, and needless tinkering with its solid Android underpinnings. Samsung has improved matters with the Galaxy S6, scaling back the bloatware and it's a much better phone to use as a result. Core Android Lollipop features now shine through and it's generally a much cleaner UI to navigate.
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