Actually, I solved the GPS issue.
I followed the link - post #10
http://forum.ppcgeeks.com/showthread.php?t=93720
and the below link - post $17273
http://forum.ppcgeeks.com/showthread...2695&page=1728
The GPS now works like a charm.
I still have the screen flickering issue on the incoming calls. It Flickers with some screen for few times and gives the screen to "Answer / Ignore" the calls.
Any help to solve the screen flicker issue is much appreciated.
Thanks in advance.