Disconnecting in Sleep Mode

Hello,

I have noticed that when in "sleep mode" (by which I mean the screen is black from inactivity or pressing the button) my phone tends to disconnect from the internet after a certain amount of time. Because of this, I basically cannot receive calls unless I am already poking around on my phone. How can I fix this?

Thanks.

It disconnects less on another rom. Try bluekingdom, one of the most effective way to enjoy the design. Google for it. It's stressful on phones that do this, but under wifi, there should be setting once menu button is pressed. It gives option to toggle on for max performance or something like that. Hope that helps! Can't wait until they byod iPhone! Wouldn't have to worry about this android lackluster wonky os.