“By the way, I solved the problem of battery life and [the lack of] multitasking on the iPhone,” Woz told Dan Lyons of NewsWeek. “I just have two iPhones, so if the battery runs down on the first one, I can use the other. And if I’m talking on one, I can use the other one to look something up. You would not believe how much use I get out of that.”
No seriously, it's brilliant.
Of course, Woz is a multi-millionaire. Two times $70 per month or how much it is, means little to him.