Generaly, smart phone via Bluetooth device can easily complete the binding process, but sometimes may interrupted caused by the far distance of the two devices or instability Bluetooth device connectivity. Please go to your phone -- settings --Bluetooth, find your I5 plus bracelet, click "ignore device", then re-enter the app software binding.
2. Please don't press the bracelet when charging.
3. The app software is named zeroner, Android smartphone can search it through google play, IOS smartphone can search it on app store.
fit for:iphone 4S or above (iphone 4S, iphone 5, iphone 5S, iphone 5C, iTouch5, iPad3, iPad4, iPad air, iPad mini etc IOS 7.0 or above system, do not advise IOS 9.0 above version) Android 4.3 or above (do not advise the Android 6.0 above version), Bluetooth 4.0