On June 20, 2018, AT&T announced plans to launch NB-IoT in the United States early next year, followed by Mexico by the end of 2019. Like LTE-M, NB-IoT technology will be deployed through software upgrades at cell sites across the United States and Mexico. According to AT&T, NB-IoT is suited to meet basic data requirements, while LTE-M supports Internet of Things (IoT) use cases, which require higher bandwidth for firmware and software updates, mobility, and Voice Over LTE (VoLTE) services.
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