The Bluetooth function of the Android shielding system modifies the system permissions
1. To root the phone
2. Install re manager
3. Enter the phone memory
/system/etc/permissions/android.hardware.bluetooth.xml
/system/etc/permissions/android.hardware.bluetooth_le.xml and
annotate the use permission annotation symbol in these two files as <!-- to Comment content -->
<!--
<permissions>
<feature name="android.hardware.bluetooth_le " />
</permissions>
-->