How to Increase phone charger voltage, Is it possible

Is it possible to increase the voltage on a smartphone's charger? The default output voltage on USB chargers is 5 Volts but with the introduction of fast charging, we have chargers producing much more than that. For example, my Infinix NOTE 30 VIP can produce up to 21 volts. In this video I tackle this question. Is it possible to increase the voltage on a charger at will.
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[@Sakura_GamingWithAnniliaLua]

Nice amazing infinix note 40 pro 🗿😀

[@DominicGichane]

Hope to get the Infinix NOTE 40 soon

[@ousley421]

Dominic, great content. I am sharing links with friends. I have an LG LHB976 STUCK TRYING TO BOOT/OPEN AND CLOSE THE OPTICAL TRAY...DISCONNECTED power and now nothing...Mother board???

[@DominicGichane]

What happens when you disconnect the tray mechanism. Do you still get sound from the speakers?

[@ousley421]

@@DominicGichane BOOT in led window, have not opened unit yet

[@DominicGichane]

Ok. That seems like a motherboard issue if I were to take a guess

[@Sakura_GamingWithAnniliaLua]

Ok!! 🗿

[@DominicGichane]

Yes

[@MosesMugo-ns5nv]

Interesting

[@DominicGichane]

Yes it is

[@rumsiker]

What language is he talking

[@DominicGichane]

English my friend

[@randomdynamics]

​@@DominicGichanebut its sounding like some alien language