I am using NRF51822 BLE and sdk version is 11.0. But my BLE gets disconnected from my Central iOS app when app goes into background ?

[Nik]

Description: I am developing iOS app which will connect BLE and keep the connection till user don't want to disconnect. i.e we want to autoconnect BLE when BLE is in range and when BLE is out of range the connection status shown in app is disconnected.

NOW i have already enable the background mode still my app gets disconnected from BLE if app is in background for more than 3 min.

[run_ar]

I assume you are following the Core bluetooth background processing for iOS apps guide?

What other tasks do you have running? Can you test with only your app running in the background and Maybe capture a sniffer log? What disconnect reason do you get?

[Nik]

Hi @run_ar I need to get the location update so location update is on for background mode. as well as There will be few notifications App will receive for specific events.

I have also tried with sniffer and Master disconnect connection with slave. I won't be able to provide logs right now but thats what i have seen. It didn't provide any reason as no delegate method gets called when BLE gets disconnected.

Is there any way to keep running my app in background forever ?

[run_ar]

Unfortunately I don't think you can keep running forever, I think iOS would terminate your app if it needs the resources, or if you spend to much time in background mode. However 3 minuttes seem a bit short. Do you get a disconnect reason on the peripheral device?