Testing an iPhone Duo in Store? Start With These Checks

Before you buy an iPhone Duo, a guide suggests spending a few minutes testing a demo unit at an Apple Store. The piece lays out six things to check during a hands-on visit, on the premise that a short session with the phone can reveal more than a spec sheet does.

Trying a phone in person is the easiest way to judge the things that specifications and launch reviews tend to skip, such as how the device feels in the hand, how quickly the controls respond, and how the screen and cameras look under store lighting. Demo units also offer a low-pressure chance to compare the model against the phone you already own.

The full guide has the complete list of six items. This summary does not reproduce them, because the source I was working from included only a headline and no details of the checks themselves.