Samsung is boosting the battery life in the Galaxy Note9, too. The device will offer "all-day" usage thanks to its inclusion of a huge 4,000mAh battery, according to Samsung, although the company hasn't provided a specific estimate on the number of hours of possible usage. It should, however, mean longer battery life than the 14 hours promised for the Note8 (which has a 3,330mAh battery). Longer device battery life is "huge for business," Coleman said. "It's one less thing to stress about. … With the longevity of the battery, I think it provides a true differentiator for us and solves business problems."