Permissions:

• Android: Add the required permissions to your AndroidManifest.xml

<!-- Tell Google Play Store that your app uses Bluetooth LE
 Set android:required="true" if bluetooth is necessary -->
<uses-feature android:name="android.hardware.bluetooth_le" android:required="false" />

<!-- New Bluetooth permissions in Android 12
https://developer.android.com/about/versions/12/features/bluetooth-permissions -->
<uses-permission android:name="android.permission.BLUETOOTH_SCAN" android:usesPermissionFlags="neverForLocation" />
<uses-permission android:name="android.permission.BLUETOOTH_CONNECT" />

<!-- legacy for Android 11 or lower -->
<uses-permission android:name="android.permission.BLUETOOTH" android:maxSdkVersion="30" />
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN" android:maxSdkVersion="30" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" android:maxSdkVersion="30"/>

<!-- legacy for Android 9 or lower -->
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" android:maxSdkVersion="28" />

To avoid errors in release builds, please add the following line into your project/android/app/proguard-rules.pro file.

-keep class com.lib.flutter_blue_plus.* { *; }

• iOS: Add the required permission to your ios/Runner/Info.plist file

<key>NSBluetoothAlwaysUsageDescription</key>
<string>This app always needs Bluetooth to function</string>
<key>NSBluetoothPeripheralUsageDescription</key>
<string>This app needs Bluetooth Peripheral to function</string>
<key>NSLocationAlwaysAndWhenInUseUsageDescription</key>
<string>This app always needs location and when in use to function</string>
<key>NSLocationAlwaysUsageDescription</key>
<string>This app always needs location to function</string>
<key>NSLocationWhenInUseUsageDescription</key>
<string>This app needs location when in use to function</string>