APN Setting dialog for J2ME midlets issue

[pradnk]

I have developed J2ME midlets for S60 FP1 phone with networking capabilities. It works fine on the emulator.
I can also port and install the same on the device.
After installation, if I go to App Manager and set the preferred APN for that MIDLET and start the midlet it works perfectly fine.
But, if I do not set a preferred access point and try to start the Midlet, the APN setting dialog pops up. Here, I select my access point. But, still it is not able to connect to the network. But, setting the same access point as preferred access point works. Is this problem faced by others as well? Is this an issue with S60 FP1 devices? Please let me know as this is an issue I have been facing from quite sometime.