​Apple has a lot to prove to critics — including myself — if it wants to show that the iPhone Duo is, without question, the best foldable phone on the market. That’s because book-style foldables demand far more system resources, especially when driving larger canvases than traditional slab phones.

​One area where the iPhone Duo could solidify its position as the foldable to beat is performance. Armed with the A20 Pro chip, early signs suggest it is no slouch, especially given the outstanding performance we’ve seen from the iPhone 18 Pro and 18 Pro Max. But where does it land against key rivals, as well as its slab siblings?

After running various synthetic benchmark tests, I can tell you that the iPhone Duo is easily one of the most powerful phones around. Here’s why.

​First off, I want to show how the iPhone Duo operates on a baseline level when its CPU is put to the test — which is where Geekbench scores come in. This synthetic benchmark tests a device’s single- and multi-core performance, and the A20 Pro proves once again that it is just as formidable inside the iPhone Duo.

Apple’s first foldable phone pulls in impressive Geekbench 6 single- and multi-core scores of 4,722 and 12,708, respectively. While those figures trail its Pro siblings slightly, the difference is practically negligible given that the single-core scores are separated by fewer than 20 points, and multi-core by less than 100.

5% performance advantage overall — effectively proving that the Duo is just as capable as Apple’s traditional flagship slabs.

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