Does OS Maps work on iPhone Duo?
Not yet. OS Maps's current version (5.6.2, 24 August 2026) came out before Apple's iPhone Duo tools, so on the inner screen it opens in an iPhone-size window with black bars. It works, just not full screen.
- On iPhone Duo
- Not yet
- Developer
- Ordnance Survey
- Category
- Navigation
- Current version
- 5.6.2 · 24 August 2026
- Popularity
- #67 in the top charts in the UK
- App Store rating
- 4.7 out of 5 (102,337 ratings)
- Last checked
How we know
Its current version is older than Apple's iPhone Duo tools (5 October 2026): on the inner screen it opens in an iPhone-size window with black bars. See it on the App Store
History on iPhone Duo
- · Not yet (version 5.6.2)
Other Navigation apps on iPhone Duo
-
Google MapsGoogle · NavigationUpdated, unconfirmedUpdated 23 October 2026 -
SolocatorCivi Corp · NavigationUpdated, unconfirmedUpdated 7 October 2026 -
Waze Navigation & Live TrafficWaze Inc. · NavigationUpdated, unconfirmedUpdated 21 October 2026 -
Blitzer.de PROEifrig Media · NavigationNot yetLast update 8 September 2026 -
APCOA FlowAPCOA GmbH · NavigationUpdated, unconfirmedUpdated 16 October 2026 -
MilGPSCascode Labs Pty Ltd · NavigationAdaptedRelease notes, version 7.26.0 -
Hill ListsGraham Haley · NavigationUpdated, unconfirmedUpdated 18 October 2026 -
FlitsmeisterFlitsmeister B.V. · NavigationAdaptedRelease notes, version 14.17
All apps on iPhone Duo in the UK →
Got an iPhone Duo? How does OS Maps look on the inner screen?
No owner report yet for version 5.6.2.
Still looking for the iPhone Duo itself? Restocks sell out within minutes: get an alert the moment one lands near you.
Good to know
Does OS Maps work on iPhone Duo?
Not yet. OS Maps's current version (5.6.2, 24 August 2026) came out before Apple's iPhone Duo tools, so on the inner screen it opens in an iPhone-size window with black bars. It works, just not full screen.
Why do some apps have black bars on iPhone Duo?
Because they were built before Apple's iPhone Duo tools. On the inner screen, an app built for an older iOS opens in an iPhone-size window on a black background; one built for iOS 27.0 uses more of it but leaves some space blank; only apps built with the iOS 27.1 SDK, which developers have had since 5 October 2026, use the whole display.
When will OS Maps be adapted to iPhone Duo?
Only Ordnance Survey knows. We check OS Maps on the App Store again within about 1 h: this page changes as soon as a new version says it supports iPhone Duo.
Do apps that aren't adapted still work on iPhone Duo?
Yes. Every iPhone app runs on iPhone Duo: one that isn't adapted just doesn't fill the inner screen until its developer updates it.
How we measure
Sources: Apple's list of apps adapted to iPhone Duo (22 October 2026) and each app's App Store record (version, release date, release notes, description). Apple doesn't say which tools an app was built with, so an app stays “Updated, unconfirmed” until its developer says more.