Hi, I'm new to android and just bought a samsung galaxy y duos. It's a dual SIM phone and I use data services in SIM 2 and use other one for calling, messaging etc. I don't receive any calls while using data services like play store, web browser, facebook chat, though the calls are for not the SIM in which I use data services. I often get complaints from my friends and family that they can't reach or contact me in whichever numbers I'm using. Please tell me if it is normal among android users or there is any way through which I can have it fixed. I had used nokia a smartphone before but never faced such a problem as this one. Thank You.