I'm in a 3G area and I see the 3G icon on top of the screen and internet works on phone great but when I activate the hotspot I can see it from laptop and I get an IP but the 3G icon goes off the phone and I get no internet on either device. I turn off hot spot icon reappears, and phones internet resumes working. Whats am I doing wrong? I'm sure its a menue I missed buy where??