Apple Reverts Design Change on iPhone 16 Pro, Reinstitutes mmWave Antenna Window on iPhone 17 Pro Models

Apple Reverts Design Change on iPhone 16 Pro, Reinstitutes mmWave Antenna Window on iPhone 17 Pro Models
source: gettyimages
September 13, 2025

Apple has made a notable shift regarding the design of its upcoming iPhone 17 Pro and Pro Max models. After introducing certain changes with the iPhone 16 series, the company has reversed course to bring back a key feature aimed at enhancing cellular connectivity.

The Return of the Antenna Window for mmWave 5G

The iPhone 12 through iPhone 15 series have all featured an antenna window made of glass on the top edge of the device. This component allows mmWave 5G signals to pass through, supporting ultra-fast cellular data in dense urban areas. However, with the release of the iPhone 16, Apple eliminated this antenna window, replacing it with a new design that included a Camera Control button positioned on the bottom-right edge, where the antenna window once resided.

Interestingly, the iPhone 17 Pro models in the U.S. have reintroduced the antenna window. This design feature now appears on the top edge of the device, enabling better transmission of mmWave 5G signals. The new design maintains an aluminum unibody, which typically blocks radio signals; hence, the antenna window—likely crafted from glass or advanced ceramic shielding—serves to facilitate superior cellular connectivity.

Regional Variations in 5G Support

While all iPhones sold outside the U.S. lack mmWave 5G capabilities, the antenna window is present on the iPhone 17 Pro and Pro Max in select countries, including Canada, Japan, Mexico, and the United Arab Emirates. These regions predominantly sell the devices as eSIM-only models, meaning no physical SIM card tray is available.

What is mmWave 5G?

mmWave is a group of high-frequency 5G electromagnetic waves that can deliver incredibly fast data speeds over short distances, making it ideal for crowded urban environments. In contrast, sub-6GHz 5G offers broader coverage but with comparatively slower speeds, suitable for suburban and rural areas.

Summary of Key Features and Announcements

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