I noticed this a few days ago, on and off, I'd get bbm and whatsapp while on a call
Today I notice it straight through! Full 4g while I'm on a call! So I can reply to important (stalking) messages don't have to worry about being on long calls and people knowing
This is amazing! Please tell me its an upgrade and not just buck ups! I use my headset a lot so it helps to be able to browse or message while on a call