I want my app to be able to receive notification from the server while it is running in the background. I don't like pooling, that will drain user's battery since I need almost realtime response, does Series 40 support that?

解决方案

To answer the question if you can intercept SMS on an S40 phone then I'd say yes. You can use push registry. See this link for the j2me sample. This is only half of the problem as this is the receiving end. You need to create a server that "pushes" a message to a certain mobile number on it's push registry port. You can use an SMS gateway maybe to push messages?