Contra-anecdotal evidence: I owned 3 iPhones over the years (original, 3GS, 4S) and never used a case. I never broke anything on them. The only concession to p

Contra-anecdotal evidence: I owned 3 iPhones over the years (original, 3GS, 4S) and never used a case. I never broke anything on them. The only concession to preservation I made was to make sure it was the only thing in that pocket (no change, keys, pocketknife, etc. in there with it)