Does Unofficial Guide to GTA V M&S work on iPhone Duo?
Probably. The release notes for Unofficial Guide to GTA V M&S 2.3 (October 31, 2026) mention iPhone Duo. No owner has reported how it runs yet.
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Mentions iPhone Duo: “Full support for iPhone Duo!”
Checked every few hours. Only builds made with the iOS 27.1 SDK, accepted since October 5, 2026, can use the whole inner display. Owner reports confirm whether an update did.
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