iPhone 17 Pro Max wins on software longevity and ecosystem (9 vs 6 longevity score) while Xiaomi 14 Ultra excels in camera hardware flexibility and charging speed. The Xiaomi's 50MP 1-inch Leica sensor outperforms the iPhone's 48MP setup in RAW detail per DXOMARK-style tests but trails in video. Choose iPhone if you value updates through 2032; pick Xiaomi for photography versatility.