MotoG4 launched in May 2016, recently I bought it & I am totally contented with my investment there are many reasons, its OS is Marshmallow 6.0.1which is upgradable to 7.0 Nougat.
Its processor consist Snapdragon 410 and 2GB RAM with 16 GB internal storage which is enough for middle range screensize phones( 5.0) .
Camera is normal 8MP& 5MP with auto focus LED, and at last one best thing we can say about it, there will never occur hanging problem with it.