Motherboard Detection: This tool can help identify issues with the iPhone's motherboard by testing various components and circuits. It's useful for repair technicians who need to diagnose hardware problems. Versatility: The "3 in 1" aspect typically means that the tester includes multiple functionalities or modes, such as checking different parts of the motherboard, testing power supplies, and possibly running diagnostics for various components. Platform-Specific: Since it's tailored for iPhone models X, XS, and XS Max, it includes connectors and test points specific to these models, making it a precise tool for repairs and maintenance.