To pair more than one mobile device to your mPOP printer switch ON Pairing permission in its Bluetooth settings.
This is what you need to do to change the pairing permission:
Download mPOP Utility app from Play Store.
Enter the mPOP Utility app, select Settings -> Selected Device, and tap on the Unselected State tab.
Choose your connected mPOP from the list of connected devices (i.e. STAR mPOP-K****).
The STAR mPOP-K**** now shows as a selected device.
Tap on Bluetooth settings to edit its settings.
Flip the New pairing permission switch to the right to enable the pairing with more than one mobile device and tap on the Apply button to save changes.
Here you can change device or port name to something recognizable, for example, grill printer or gin section printer or the name of the staff member making orders.
The mPOP is now visible and ready to pair with other mobile devices.