this post was submitted on 22 Dec 2024
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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] 42 points 5 days ago (2 children)
[–] [email protected] 6 points 5 days ago (3 children)

Is this a movie reference?

[–] [email protected] 20 points 5 days ago (2 children)

This is a reference to Warhammer 40k, a tabletop gaming / book / video game franchise

The Orkz in the setting paint their war trucks red because they believe it makes them go faster. And it does, in fact, make them go faster

[–] [email protected] 18 points 5 days ago (2 children)

Note that it makes them go faster directly because the orcs believe it does, they are a collectively psychic species, so if enough of them believe something, then it's true.

[–] [email protected] 2 points 3 days ago

Orks have so much unrealized reality bending power. One time one of them thought the spaceship was getting too hot, so he opened a window to get a cool breeze. And because it's orks, they didn't immediately get sucked into the vacuum of space.

[–] [email protected] 7 points 5 days ago

Just like one smart boy writing engine on a rock. When enough Orks believe the rock is an engine it will in fact become an engine.

Which confused the shit out of humans when they go to reverse engineer ork stuff.

[–] [email protected] 3 points 5 days ago

That's why my work phone is always yellow.

[–] [email protected] 5 points 5 days ago

No, just a pre-internet meme about red cars.

[–] [email protected] 3 points 5 days ago

Google Star Trek Red Shirts

[–] [email protected] 2 points 4 days ago

The number of misconceptions from this allusion far exceeded my expectations.

[–] [email protected] 19 points 5 days ago (1 children)

In terms of heat, efficiency etc., the difference would be negligible if it's even there to begin with.

The only real difference you'd see is dirt build-up, which would be more noticable on lighter colors. This would still occur on darker colors but you wouldn't see it as easily.

[–] [email protected] 2 points 5 days ago (3 children)

True.
Have you noted any places where colour would matter?

[–] [email protected] 9 points 5 days ago

Anything that is in the sun. A white car will not heat up as quick as a black one when you drive in the summer, same for a light colored roof on a house, or a train or a bus.

So whenever something is outside and facing the sun, choose the lighter colored version.

[–] [email protected] 2 points 4 days ago

It matters for growing plants. White containers will draw less heat.

[–] [email protected] 15 points 5 days ago
[–] [email protected] 13 points 5 days ago* (last edited 5 days 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.

[–] [email protected] 7 points 5 days ago

slaps a black vinyl case on every phone I buy, ever

Nope!

[–] [email protected] 10 points 5 days ago* (last edited 5 days ago) (3 children)

i have found that brighter ones can be easier to find at the bottom of a bag or on the counter

[–] [email protected] 3 points 5 days ago

I bought a small metal clip that hangs out the charging port of my case and tied a ribbon to it. I also keep my phone on a neon lanyard during big events or when I don't have pockets.

[–] [email protected] 1 points 5 days ago

I have a green phone now because I was tired of loosing it on the dark countertops in my home.

[–] [email protected] 1 points 5 days ago

Indeed.
I had read an article that said that black cars may be more likely to get into accidents, citing some study. Not sure if it was confirmed by other studies, but it seems to be a good point to consider.

[–] [email protected] 3 points 4 days ago

The answer is yes! It depends on the type of material and the goals. For instance, the iPhone 4 was supposed to have a white version on release but it was delayed. Apple eventually blamed the different in heat and UV radiation being different, if I remember correctly. Vague rumors that it messed with the proximity sensor also floated around. This was during the antenna-gate β€œyou’re holding it wrong” era. Could be all BS and there was no formal explanation given.

Most times it probably doesn’t affect very much but manufacturing engineers spend a lot of R&D to make sure it doesn’t by the time things to get to consumers!

[–] [email protected] 4 points 5 days ago* (last edited 5 days ago)

Perhaps a lighter/reflective color can keep its temperature lower for longer if you think you might leave it lying under the sun? Overheating damages the battery

[–] [email protected] 3 points 5 days ago* (last edited 5 days ago) (1 children)

I like the word smartpjone. /gen

[–] [email protected] 2 points 5 days ago (1 children)
[–] [email protected] 3 points 5 days ago

(Product)^Red^ appliances efficiently makes one look like a sucker for corporate β€œcharity” malarkey https://www.nbcnews.com/health/health-news/fraud-plagues-global-health-fund-backed-bono-others-flna1c9465258