Why my app can not connect nrf51822?

[chenyu]

Is there any extra requirements When a Android APP connect to my Ble Decice? I want connect to my Ble device(51822) by my Android APP(EZ-GUI Ground Station V3.208.208), But it can't be connectted, Can you tell me the possible reason? (Platform: s110v6.0.0.5 + sdk5.1.0+51822) Ps:My BLE device can be connectted by "nrfUART APP" easily..

[Hung Bui]

@Chenyu: No, there is no extra requirement.

Which error did you have ? Have you tried to follow the source code provided in the nRFUart example app ?