
Apple decided to limit the periscope telephoto lens to only the iPhone 15 Pro Max due to size constraints. The larger Pro Max model has more room to fit the lens inside, whereas the smaller iPhone 15 Pro does not have enough space to accommodate the periscope lens. As a result, the iPhone 15 Pro has the same telephoto lens as its predecessor, which means it only gets up to 3x optical zoom, while the iPhone 15 Pro Max boasts a 5x optical zoom capability. This decision was a letdown for users who prefer a smaller phone but still want the best possible camera hardware.

The iPhone 15 Pro has a battery capacity of 3,274mAh. In comparison, the Samsung Galaxy S24 has a larger 4,000mAh battery, while the OnePlus 12 boasts an even more impressive 5,400mAh battery. The iPhone 15 Pro's battery capacity is smaller than these competitors, which may result in shorter battery life.

The charging speeds of the iPhone 15 Pro did not improve despite the switch to USB-C because Apple decided to cap the charging speed at 27W for all iPhone 15 models. This decision was made by Apple, and it is not related to the USB-C port itself, as other devices can utilize much faster charging speeds through USB-C. It appears that Apple prioritized other features and capabilities for the iPhone 15 Pro, such as improved data transfer speeds and camera performance, over faster charging speeds.