"Improvements in PUSH reliability – made more robust and reliable".
Still the Software behaves not as it should:
you press back two times to exit the app (the same as if you press the middle button). ok. Calls are still coming in.
But if you use the task switcher and close the window of the 3CX client, no call will come in.
Also if you just use the close all option of the Task switcher, the phone will not ring any more.
In my opinion, the only way to disable incoming calls should be the "Exit - Ignores Push" option in the Menu of the App.
I dont think I am the only one who uses the android task switcher frequently to press the close all appsbutton. Still I expect that my phone rings after closing all windows. Also I think that nobody will expect that the close of apps will stop services running in the background (like phone, wifi, email). If 3cx wants to sell the Android Client as a full featured Phone, it should behave like a phone.
On the IOS Platform this works as expected. Another reason why I think this is a defect.