Connection lost with Android device screen off

[mdever]

I want my device not to disconnected. I'm trying with custom board with NRF51822AA. I customized NUS example a little. And also I've downloaded NUS example for Android provided by Nordic.

The problem is that connection is lost while screen is off. So phone cannot receive BLE data.

How can I fix it? Is there any way to sustain the connection in NUS mode? Do you have any example?

Please help me.

[Hung Bui]

Which app did you use ? In my case (nRFUART app) it still works in the background as the BLE activity was handled by a service.

You can test with nRFConnect or NRFToolbox app also.