Kuo: all four iPhone 13 models will feature larger batteries with higher capacities, hence new models will also be heavier than iPhone 12 (Hartley Charlton/MacRumors)

Hartley Charlton / MacRumors:
Kuo: all four iPhone 13 models will feature larger batteries with higher capacities, hence new models will also be heavier than iPhone 12  —  Apple appears to be improving the iPhone's battery life with the iPhone 13 lineup, using a number of design changes, bigger batteries, and efficiency improvements.

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