how to handle different models for the same code

Hello

I am small piece of code which POST some pic file to server say tomcat. This code is running perfectly on some models in the simulator but in models like 9800 9530 and 8310 it is creating the problem.
how can change my code or these are compatibility issue.

Please help me.
Thanks

If the code is working fine on simulators but not on actual devices, this means you'll need to re-install it again properly. While installation it will ask to view the permissions. I think you'll need to allow the all [or required] connections. I hope this will work. Regards.