As expected, it is indeed a user error, as far as Apple is concerned; see the full post for other Steve Jobs email insights
MacRumors forum user samcraig emailed Steve Jobs about the low signal issue while holding the new iPhone 4 in a specific way. The potential issue has been generating a lot of discussion. Samcraig emailed Steve Jobs:
Question - What's going to be done about the signal dropping issue. Is it software or hardware?
To which, Jobs replied with a typically short response:
Non issue. Just avoid holding it in that way.