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What modules are supported with Twilio Narrowband IoT?

Twilio Narrowband SIM cards must be used in T-mobile-approved modules. For a list of modules that have been approved for use on their network, see T-mobile's IoT device certification site here:

Notice: Twilio Narrowband SIMs use a different radio band than standard wireless phone SIM cards, and are unable to be used in standard mobile phones. 

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