The iPhone Duo features an IP68 dust and water resistance rating, outperforming Samsung's Galaxy Z Fold8 which carries only an IP48 rating. This means the Duo is fully dust-tight, while the Fold8 models are more vulnerable to dust infiltration. Google's Pixel 11 Pro Fold also achieves the IP68 standard. IP6X certification ensures no dust can enter the device, a critical advantage for foldable phones where particles can damage intricate hinges. Apple rates the Duo for immersion up to 6 meters for 30 minutes. However, Apple cautions that resistance diminishes over time with normal wear. The device also boasts a titanium frame and a 10-layer display for added durability. iFixit is expected to conduct a teardown to assess long-term hinge integrity. Related Roundup: iPhone Fold

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