iPhone 4S -- neither of my partner or I have ever had any troubles with an iPhone, or any other i-device (of which we have many) for that matter.
A friend took a couple of us to an Apple store, in Buenos Aires no less. He showed us things on an Apple that the manager never knew...I thought it was going to mix us drinks...But when I bought a MacBook I had one problem after another and I live 100 miles from an Apple store...after the 2nd HD I gave up on it.
