----- (regarding the presentation)
They had AT&T, the iPhone’s wireless carrier, bring in a portable cell tower, so they knew reception would be strong. Then, with Jobs’s approval, they preprogrammed the phone’s display to always show five bars of signal strength regardless of its true strength. The chances of the radio’s crashing during the few minutes that Jobs would use it to make a call were small, but the chances of its crashing at some point during the 90-minute presentation were high.