Apple wraps up iPhone 17 engineering validation testing ahead of mass production
David Joseppi
Posted On 30/04/2025 
Apple suppliers have reportedly completed engineering validation testing (EVT) for at least one model in the upcoming iPhone 17 lineup, according to MacRumors, citing a paywalled preview of a forthcoming DigiTimes article. The milestone marks a significant step forward in development as Apple prepares for mass production of the iPhone 17 series in the coming months.
EVT is a critical phase in product development where prototypes are built using production-intent materials and must meet all functional and design requirements. It’s often the first time the device is assembled as a complete unit, allowing engineers and assembly teams to test and refine the product before it moves to the next stage.
At this point, it’s unclear which specific iPhone 17 model has completed the EVT process.
The standard iPhone 17 is anticipated to feature a 6.1-inch OLED display with ProMotion technology (up to 120Hz refresh rate), the new A19 chip, 12GB of RAM, and upgraded cameras, including a 48MP rear and 24MP front-facing lens.
The lineup will also debut the ultra-thin iPhone 17 Air, measuring just 5.5mm thick. Built with a titanium-aluminum alloy frame, it will allegedly sport a 6.6-inch OLED ProMotion display and similar camera specs to the base model.
The flagship iPhone 17 Pro models are expected to come in both 6.6-inch and 6.9-inch variants, featuring Liquid Retina XDR displays and a new A19 Pro chip built on TSMC’s 3nm process. Alongside 12GB of RAM, these devices will offer a triple 48MP camera system, including an ultra-wide and a periscope telephoto lens, with support for 8K video recording and enhanced thermal management. A new “Sky Blue” color option is also rumored.
