If he's referring the flip phone, and not the Droid Razr, then we're talking about a phone that had a standby time measured in weeks. At best it lasts probably 10x longer than today's smartphones so even a 75% reduction in battery life is still better than what we deal with today.
Some people still want their phone to (1) make phone calls (2) make phone calls. For them a phone that makes phone calls and the battery lasts a week is far more full featured.
