Nope.
I have this problem at my home, but when I am out for work, it does not happen in stronger signal areas. If it was solely a hardware issue, it would happen no matter where you are.
I tend to agree. I'm working in a small town right now (no 3g here) with a VERY strong signal at my hotel. My 3GS was rock solid and now my iP4, at this location is too. No matter how hard I try I can't get it to drop signal.
When I go about 5 miles to where I'm working, inside, the signal still shows a nice strong 5 bars BUT putting my hand over the antenna drops me to 1 or 0 bars.
I think I might be in an area where there are two towers pulling at my phone for signal?
Regardless, I agree. Software.