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If there's anything everyone already knows about 5G, it's that it's fast. Download speeds could be up to 100 times faster than current 4G LTE networks. It also boasts less latency, or lag - that's how long of a delay there is between a device, like a phone, requesting data, and the network sending that data. 5G can theoretically cut that delay time down to 1 millisecond - 10 milliseconds at least. But the benefits are likely to go well beyond consumer interests, like how quickly a movie can be downloaded.