Smartphone makers have struggled over the past year to into devices with smaller than 6-inch screens and 8mm thick bodies. But Apple is already working on future versions of the Apple Watch with , which it suggests will be capable of supporting either 5G cellular networks or a fast variant of .

Apple’s plans for millimeter wave Watches were disclosed in a patent application that was  (via ) after a filing early last year, indicating that the company has been directly confronting the miniaturization and related engineering challenges associated with the fastest version of the 5G standard. While the company could have easily added using non-millimeter wave antennas similar to 4G, it’s instead looking to support both millimeter wave and prior radio frequencies in the

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