Sprint Developers

HI all
My application is launched on boot and run in background.
My target device LG LX570 (LG MUZIC).I have used the JAD entries
MIDlet-Launch-Background:
MIDlet-Launch-Power-On:
MIDlet-Background-No-Pause:

But its not working correctly.Sometimes it launches on device reboot sometimes not.
Also when it runs in background it don't make any network connection, whereas running in foreground it works perfectly.

can any body figure the problem. is there any other setting which needs to be set for running application in background.

Waiting for your reply.
Ankit