When I first got it I was getting atrocious data speeds so I powercycled it and then my speeds started to be acceptible. Than about four hours later i was attempting to download an app and it would not open. So I had to powercycle the phone once again. I also notice that unless I tap really hard on things in the appstore it does not read the touches. I restored the phone last night and I am still getting the issue in the app store where I have to press really hard to get a link to work.
If that were a design issue, you'd be hearing a ton of complaints. The issues you are citing do not appear to be at all common - which suggests that it's an issue with that particular phone. Take it back to the Apple Store (or wherever you got it) and ask for a new one.
Agree, he should take his made-up iPhone back to a simulated Apple Store and exchange it for a pretend iPhone replacement.