Disadvantages of XIAOMI REDMI NOTE 3 is only use Android Lollipop for factory default operating system, we think when this phone release at February 2016, then it should already use Android Marshmallow for first operating system. We have to waited whether XIAOMI REDMI NOTE 3 will get official Android Marshmallow or not. Weakness of XIAOMI REDMI NOTE 3 is not NFC sensor for data transfer. But we still can use alternative connections like Bluetooth or Wifi to transfer data from XIAOMI REDMI NOTE 3 to other device.