Why do you have difficulty in using your cell phone inside an elevator?

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Introduction to Wireless and Mobile Systems

ISBN: ?978-1305087132

4th edition

Authors: Dharma P. Agrawal, Qing An Zeng

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Question Posted: Dec 24, 2018 10:56 AM

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Why do you have difficulty in using your cell phone inside an elevator?

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Introduction to Wireless and Mobile Systems

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