Which VPNs work with the iPhone Duo at launch?

It's iPhone Duo launch day! While many questions have been raised over the device's availability, it has also become clear that many of your favorite apps might not be optimized for the new layout at launch.

For apps to scale seamlessly across the iPhone Duo, they need to be built on the iOS 27.1 software development kit (SDK). This SDK provides the tools required for apps to stretch effectively across the Duo's new 1:4.1 aspect ratio inner screen.

Without using the updated SDK, apps render with varying sizes of black bars across the unused display area, depending on which legacy SDK version they were built on.

For top-tier VPNs, a lack of display compatibility can be frustrating even if it doesn't impact their functionality. We reached out to major providers to find out if your favorite VPNs are compatible on day one.

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