Smartphones will do it in other ways such as slowing down or crash from its own climate control system(exception is one of the samsung notes series a couple of years back). There are also have thermal paste that will direct some of the heat too. The technology to deal with the heat has gotten a lot better with innovations.
Computers will do a lot more than a phone if both are up to similar technological standard. The computer from 1990s will still be outdated for the current line of computers and smartphones. A computer of today’s standard will play 4k video games and what not with nitrogen cooling.
Hope this answers your question.
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