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iPhone XS and XS Max Have 4GB of RAM, XR Has 3GB; XS Max and XR Have Larger 3,174 and 2,942 mAH Batteries - MacRumors
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iPhone XS Battery DRAIN Test in 2022 After iOS 15.5 | XS 77% BH, 86% BH, 84% Battery Health Test - YouTube
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Correction: iPhone XS and XS Max Smart Battery Cases Have Larger Capacity Than Previous Versions - MacRumors
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