Watch CNBC's full interview with AT&T CEO Jeff McElfresh on 5G in the U.S.

Apple's iPhone 12 launch is bringing 5G mobile service to the forefront, but questions remain over how fast the next generation of networks will actually be, as well as the timeline for widespread U.S. rollout. AT&T Communications CEO Jeff McElfresh joins "Squawk Box" to discuss.
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Thu, Oct 15 20208:43 AM EDT

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