iPhone camera focal length

Attached is the metadata of a photo I took on my iPhone XS Max. The focal length on the top says 26mm and on the bottom in lens model says 4.25 mm. How it can be different ? What is the correct focal length of the iPhone camera ?

26mm is the 35mm equivalent length; essentially it’s a standard figure to make numbers comparable across cameras/phones. Good explanation here.

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4.25mm is the actual focal length of the lens

If you had a 35mm camera, a 26mm lens would give you the same field of view as the lens on the iPhone.

It’s a convention to talk about phone camera focal lengths in terms of their 35mm equivalents

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Thanks for the explanation.