iPhone Duo goes on sale next Friday. Fuel Finder UK is ready for the bigger screen.
Apple's first folding iPhone arrives on 23 October, and reports say interest is huge. Fuel Finder UK has been ready since version 44: open the Duo up and you get the station list and the live price map side by side, on a screen of 7.6 inches.
Published 17 October 2026 · Fuel Finder UK team
What is happening with iPhone Duo
- On sale next Friday. Pre-orders opened on 16 October and it goes on sale on 23 October, according to PC Guide.
- Two screens. A 5.4-inch outer screen for when it is closed and a 7.6-inch inner screen when it is open. The inner screen is close to the size of an iPad mini.
- The price. PC Guide reports a UK price from £1,999 for the 256GB model.
- Demand is high. Tom's Guide describes massive global interest, tight initial stock and a warning about shipping delays, and suggests collecting from an Apple Store on launch day.
Unfolded: the list and the map, together
This is the big change. On a normal phone you pick a station from a list, then jump to the map to see where it is, then back again. On the Duo's inner screen you do not have to jump. The list is on the left and the live map is on the right.
Look at the price range bar along the bottom of the map. In this capture it runs from 166.9p to 178.9p, a spread of 12.0p a litre between the cheapest and the dearest in view. On a 55-litre fill that is £6.60. It is much easier to see that gap when the whole area is on screen at once.
Tap a station and keep your place
Tap any station and its full details open beside the list. You see the live prices, the address and how far away it is, and the list stays where you left it. Tap Back to Map to go back to the map.
Folded: still a proper app
Close the Duo and the app carries on on the outer screen. You get the station list, cheapest first, and a tap opens the full details for a station. Nothing is missing, it is just a smaller window.
The app adjusts as you fold it, unfold it or turn it sideways, so you do not need to close it and start again.
No Duo yet? Try it on an iPad
The same list-and-map layout works on iPad in landscape. If you want to see how it feels on a bigger screen before the Duo arrives, read our version 40 post.
- See the list and the map at once. Unfold iPhone Duo and compare stations without switching screens.
- Tap a station and keep your place. The details open beside the list, so you can check the next station straight away.
- Fresh prices, every 30 minutes. Straight from the official UK government fuel price data.
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More than 100,000 of you have now downloaded Fuel Finder UK across iPhone and Android, and we cannot wait for you to enjoy it on the biggest screen yet. Thank you for sharing it with your friends.
How we made these screenshots
All four are captures taken straight from Apple's iPhone Duo simulator on 15 October 2026, using the live app and the area around Bolton. The prices are from that day. We have not tested on a retail iPhone Duo, because they are not on sale yet.
Sources
- PC Guide: iPhone Duo pre-order and where to buy
- Tom's Guide: How to pre-order the iPhone Duo before delivery dates slip by weeks
- Fuel Finder UK on the App Store, version 44 release notes, 16 October 2026