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Solar power [1] and DNS-tunneling [2], which apparently works even with an expired SIM with no mobile or data plan at all.

[1] Obviously using the solar generated power for something else to save on electricity might be more effective, but where is the fun in that?

[2] https://f-droid.org/en/packages/org.xapek.andiodine/

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Yeah, just a few milennia of that and the solar panel will pay for itself!

It depends on where on earth you are [1]:

> $12.30: 5W 5V Portable Solar Panel Power Bank Phone Charger

[1] https://www.ebay.com.au/itm/403705119852

So are you going to go and do this very complicated setup for $2/month apparently valuing your time at less than that?

Came on, where is your sense of adventure? :) seriously, this kind of rabbit holes are one of the best parts of HN, and every body understand they are just rethoric exercises.

Obviously you wouldn't do it with just one phone - you'd get a cluster of several hundred/thousand.

I could definitely picture myself as a teenager getting a bunch of shitty old Android devices to make $20 a month, though. My younger cousins will fill out surveys with fake info to make a few bucks here or there.

Imagine a Beowulf cluster of $10 smartphones. Oh, wrong website.

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