Android Question Prevent android to kill my app

Hi,

I have app that is running in background and there is problem when customer has open more another apps (Skype, Maps etc.). My app is killed in this case. Probably because device is overloaded, but I dont know it for sure. Is there any way how to prevent android to kill my app in this situation? Maybe it is problem with KeepAlive, Is there any time limitation?

Thanks a lot for answers