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I'm not sure how it works in the US, but here in Europe you can call 112 (911) without a SIM card, so it's obvious that phones connect to towers. But I agree that people don't think about this.
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I'm not sure how it works in the US, but here in Europe you can call 112 (911) without a SIM card, so it's obvious that phones connect to towers. But I agree that people don't think about this.
This makes obvious sense now that you've said it but I hadn't even considered it.