iPhone Duo battery life results are in — here's how it compares to other foldables (and iPhone 18 Pro Max)

Recent tests comparing the iPhone Duo and iPhone 18 Pro Max identify both as top devices of the year. While the iPhone Duo cannot match the battery life heights achieved by the iPhone 18 Pro Max, it still maintains a fairly long-lasting battery. First-hand impressions from real-world use provide a basis for deciding between these two models, highlighting the specific performance differences and battery results when compared to other foldable devices and the Pro Max model.