Apple finally launched the highly anticipated iPhone 15 lineup on September 12th. All four models feature some quality-of-life improvements, including support for the USB-C port. It’s also confirmed that they all support DisplayPort for up to 4K HDR video mirroring and output to external displays. This is a significant improvement over previous iPhones, which were limited to 1080p video mirroring with Lightning adapters.
To use DisplayPort support on an iPhone 15, you will need a USB-C to DisplayPort cable. Apple does not sell this cable directly, but there are many third-party options available. Once you have a compatible cable, you can simply connect it to your iPhone and external display, and you will be able to mirror your iPhone’s screen or output video at up to 4K resolution and 60 frames per second.
HDR support is also available with DisplayPort, so you can enjoy high-dynamic range content on your external display with the iPhone 15. You can also use Apple’s $69 USB-C Digital AV Multiport Adapter to mirror video to an HDMI display at 4K/60Hz. However, this method doesn’t support HDR.
While DisplayPort support is a welcome addition to the iPhone 15, it is still missing one feature: extended display mode. Extended display mode would allow users to use their iPhone as a second display for their computer, similar to the Stage Manager feature on iPad.
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