Generalscan Scanbuddy GS-X3 Quick Start Manual page 56

21-3.Bluetooth Pairing Guide
When you want to pairing with iOS and have two way communication at
the same time, you should use the scanner with Bluetooth 4.0 .
It similar with SPP mode but it is free and no need pass the MFI certification .
Please scan the following Bluetooth BLE mode barcode and search it in iOS
device.
We recommend you use SPP mode for two way communcation in Android,
the compatibility is better than BLE in Android platform.
Bluetooth BLE Mode
Note: Apply for all bluetooth barcode scanner with BLE
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