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Spec drill · Thickness

iPhone Duo vs MIX Fold 4

A side-by-side readout for thickness.

Buyer's guide

What thickness means for this matchup

Thickness is a measured value in mm. On this field, Xiaomi - MIX Fold 4 has the advantage because the lower value is preferred.Treat this page as one decision slice, then return to the full comparison before making a purchase.

Apple - iPhone Duo
11.3 mm
Xiaomi - MIX Fold 4
9.47 mm
Apple · iPhone Duo
11.3mm
Xiaomi · MIX Fold 4
9.47mm
▲ lead
VerdictMIX Fold 4 wins on thickness.
Context

Understanding thickness

Thickness is a numeric spec measured in mm. On this metric, lower values are generally better — smaller, lighter, thinner, or less demanding usually translates to a more comfortable or more efficient product. When comparing two products, focus on the percentage gap rather than the raw delta: a 200-unit lead means something very different at the low end of the range than at the high end. Pay attention to the unit, too — manufacturers sometimes quote peak or burst figures that are not sustained in real-world use. Cross-check the published number against independent measurements where possible, especially for performance and battery claims. Finally, remember that a single spec rarely tells the whole story; the Mars Score weighs thickness together with the rest of the spec sheet so one outlier doesn't distort the verdict.

This matchupiPhone Duo's 11.3mm is roughly 19% more than MIX Fold 4's 9.47mm (a 1.83mm gap). Lower is better here, so MIX Fold 4 takes the lead in real use.

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Other specs on this comparison

See the full Smartphones category for all products ranked by Mars Score.