Apple Inc. is planning to release three new iPhone models again this fall, including a successor to the struggling XR, the lower priced 2018 device with a liquid-crystal display that has fallen short of Apple’s sales expectations, people familiar with the matter said.

Apple plans to introduce some new camera features like a triple rear camera for the highest-end model and a double rear camera for the two other models, the people said. Such cameras have multiple lenses that offer better-quality photos.

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