Android Question Bluetooth device unpair issue

[GaNdAlF89]

Hi, I work with a bluetooth printer in my app.
This app runs in some tablets, and each tablet has assigned an own printer. Primarily each printer is manually paired with its tablet, in Android-Bluetooth settings. At the first run, the app connects to printer with serial.GetPairedDevices.
Sometimes it happens that the pairing printer-tablet is lost: the serial.GetPairedDevices doesn't find any device, and if I check in Android-Bluetooth settings, the printer is no longer paired. Then if I try to pair it again, it works. This happens with different pairs of tablet/printer, about once a month.

Why? It depends on what?

 

[Erel]

I'm not sure why it happens. It sounds like an OS bug.

However you don't need to pair the printers at all. Use BluetoothAdmin to search for the printer and connect to it.

 

[GaNdAlF89]

I'm not sure why it happens. It sounds like an OS bug.

However you don't need to pair the printers at all. Use BluetoothAdmin to search for the printer and connect to it.

I know, but there is a Kiosk service, which stops the bt pairing when user should enter the pin.