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Does the colour of an appliance like smartphones matter in the aspect of efficiency or use? (lemmy.sdf.org)

submitted 1 day ago* (last edited 1 day ago) by [email protected] to c/[email protected]

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Been thinking about replacing the current smartphone, as the touchscreen seems to be failing(Screen replacement seems to be not so economic).

Saw different colours being offered. Black, White, Blueish and Greenish colours were common.

Does the external body colour affect the efficiency of the phone? Like, in heat going out or going in? Or the ease of cleaning it? White colours seem to show presence of dust etc?

And are there other places where the colour matters?
I've read that white roofs generally have a lower heat gain than other ones(without infrared reflecting paint).

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[–] [email protected] 13 points 1 day ago* (last edited 1 day ago)

Yes, surface material and colour can affect the thermal performance of a device. However when it comes to a smartphone with different colours this difference is almost certainly negligible.

Heat is transmitted by 3 methods, conduction, convection and radiation. For radiation heat transfer there are two properties that affect how much heat is transmitted/absorbed by the surface, temperature and emissivity. Generally darker colours have higher emissivity than lighter colours or reflective surfaces, but different colours of a phone are going to be close assuming they are the same material and radiation is a minor component in cooling a phone.