Some buttons don't work on some mobile models

[theone2003a]

I have written a program in j2me and it works in many of the phones correctly, however there are some cellphone models like Nokia 6630 that Confirm(OK) button doesn't work, actually all other buttons inside the program work (like up, down, numbers, characters) but OK button doesn't work.

So what the problem would be?

[skalogir]

Can you provide a snippet with the part of the code that is executed when you press the OK button?