The OnePlus 9 is one of the most high-profile handsets around. Not quite a match on that front for the Samsung Galaxy S21 or the iPhone 12, but close, and as such those two phones are likely to be its biggest rivals.

These three handsets are all flagships, and they’re all the standard model in their ranges – so not the top one, but the one that might well have the most mass appeal.

They all pair high-end specs with high-end prices, but there are plenty of differences between them too, and some areas in which one of these handsets does significantly better or worse than the others.
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