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Latest recommended config:


"BluetoothSPP": {
  "On": true,
  "Filter": "RS507",
  "PIN": "",
  "UseDeviceMajor": false,
  "UnpairAll": false,
  "DiscoveryOn": false,
  "BarcodeType": "FNC3",
  "ShowUnpairBarcode": false,
  "ScannerType": 6,
  "TerminatorWait": 0,
  "Terminators": ""


"Bluetooth": {
  "OnAtStart": true,
  "OffAtExit": true,
  "KeepPairingOnExit": false,
  "KeepPairingOnStartup": false


Tested successfully on:

Android Oreo (8.x)
Manufacturer Device Android Version Date Tnx version Recommended Config


Android Nougat (7.x) – No more tested on this version
Manufacturer Device Android Version Date Tnx version Config deviation / Notes
Unitech WD100 7.1.1 17/03/20 Emulator
BT Pairing
Vxt Engine
Vxt Calibrate
"UnpairAll": false,
"ScannerType": 6,
  • Build number SQ46W_P1_00AX_YBUTE_AU1616_404_R_0_190715_01
  • Scanner reconnected automatically
  • Voice projects
    • “HeadsetType”: 1 (in _vxt_configuration.jcf file)
    • Headset reconnected successfully



  • Use the Filter parameter as much as you can. It will be easier to establish the connection between devices.
  • Every time TellNext is closed, the scanner battery must be removed and reinserted again when TellNext is opened again.