Apple is splitting its iPhone lineup. The iPhone Duo replaces the standard and Plus models with a single new form factor, while the iPhone 18 Pro continues the premium tier. These are not incremental updates: the naming change signals a structural shift in how Apple segments its product line.
The comparison breaks down every material difference between the two devices, covering chip performance, camera hardware, display specs, and build materials. The details matter here because the price gap and feature gap do not align the way they did in previous generations. Reading the full breakdown reveals which tradeoffs are real and which are marketing.
If you are deciding between these two devices before buying, the specific numbers on display brightness, ProRes video availability, and charging speeds are the deciding factors. This video is worth watching in full because the conclusion is not obvious from the specs sheets alone.
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