eli5 how international calls work?

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Just made a mobile to another mobile from Australia to UK and was amazed by how clear and non laggy it was. How does the signal get sent back and forth from one side of the world to the other? Satellite or cable? Radio or fibre optic?

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Anonymous 0 Comments

Why are the two other comments so similar?!

Edit: They have been deleted now. They were eerily similar, like something ChatGTP would write 🙂

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