• Question: How do phones work?

    Asked by were440jaw on 17 Oct 2021.
    • Photo: Sophia Constantinou

      Sophia Constantinou answered on 17 Oct 2021:


      Mobile phones have rechargeable batteries in them. Positively charged lithium ions travel from the anode through the electrolyte to the cathode, this drives electrons through a circuit which creates electricity so you can use your phone. When you’re charging your phone, the lithium ions travel from the cathode to the anode. Let me know if there’s anything you want me to explain in more detail!

    • Photo: Michael Hills

      Michael Hills answered on 18 Oct 2021:


      Lots of complicated electronics and most importantly a battery, which is what we all do πŸ˜€

    • Photo: Ferran Brosa Planella

      Ferran Brosa Planella answered on 18 Oct 2021:


      If you refer to how batteries power our phones, Sophia gave a very good explanation :). Let us know if you referred to something else about phones.

    • Photo: Rohin Titmarsh

      Rohin Titmarsh answered on 18 Oct 2021:


      Sophia’s answer about the battery is exactly right. There are also lots of sensors and computers that are running in the phone to calculate things like which way up the phone is, whether the phone has moved in a way that replicates a step for your fitness tracking apps and so on.

    • Photo: Beatrice Browning

      Beatrice Browning answered on 20 Oct 2021:


      Sophia’s explanation is exactly how I’d have phrased it! There are all sorts of intricate electronics within the device that work together to make it a mobile phone πŸ™‚

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