I could swear when I received my Maxx back in March that I could surf the web while talking on the phone. And am 99% certain that I made sure that Wi-Fi was off when testing it. My son asked me today if I could talk and surf and said he can't on his Maxx. So I tried it and I cannot.
Originally I was on GB, and now ICS & v211. During a test today, I noticed that (with Wi-Fi off) my 3G icon disappears as soon as my phone rings.
Am I losing my mind here?