By Osama 
The iPhone 16 brings several notable upgrades over the iPhone 15, making it a significant release for Apple. One of the most visible changes is the vertically stacked rear cameras on the iPhone 16, which not only enhance its appearance but also improve spatial video capture.
Both models feature a 6.1-inch OLED display with a 60Hz refresh rate, but the iPhone 16 doubles the peak brightness of the iPhone 15, reaching 2,000 nits. This makes the screen much brighter and easier to view in direct sunlight.
In terms of battery life, the iPhone 16 offers a larger battery, providing longer usage between charges. Additionally, it introduces two new hardware buttons for shortcuts, enhancing user convenience.
The iPhone 16 also includes a new ultrawide camera, which offers better performance in low-light conditions. This upgrade, along with the improved battery and display, makes the iPhone 16 a compelling choice for those considering an upgrade from the iPhone 15.
Source: CNET