I converted a broken phone into an amplifier

I Diy Yoyo is a worker working in an industrial park, i only have free time on sunday, i will upload the video for you to watch and explore together , thank you for watching the video
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Thank you very much

[@HamikiYoki]

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[@iDiyYoyo-lf4so]

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[@XmenMeet]

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[@iDiyYoyo-lf4so]

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[@YamitoTiko]

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[@iDiyYoyo-lf4so]

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[@HuysPhan]

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[@iDiyYoyo-lf4so]

Thank you