This is your resource to discuss support topics with your peers, and learn from each other.
is there a way to switch from BES to BIS on blackberry 9900? As i am not able to setup BIS as i get only BES as the only option.
Not clear on exactly what you are trying to do nor how it applies to this Thread, nor even if this is a Java developer question. I suggest you start your own Thread and think about which forum you actually want it to be in.