Does Guardian Firewall + VPN fit iPhone Duo? | Fits Duo

Name: Guardian Firewall + VPN
Author: Sudo Security Group, Inc

Question 1

Does Guardian Firewall + VPN work on iPhone Duo?

Accepted Answer

Not yet. Guardian Firewall + VPN runs letterboxed on the inner display, centered in an iPhone-sized window with black bars. Owners report it runs letterboxed on the inner display.

Question 2

Is Guardian Firewall + VPN letterboxed on iPhone Duo?

Accepted Answer

Apps built with the iOS 26 SDK or earlier show black bars around an iPhone-sized window on the inner display; iOS 27 apps resize to fill most of the screen, and iOS 27.1 apps fill it completely. Current status: Letterboxed.

Letterboxed

What owners report

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