Guess Android App ver 2.33 has Sync bug. It is irritating that it does not Sync most of time. Bluetooth is ON, tried restarting mobile device 2-3 times. Shutdown the blaze. Still no luck. Horrible App & experience after buying such a costly product. On same mobile it qorked well a month back. There is no Android update done. So it got to be an issue mostly with Android App or with blaze device.