Cellular IoT device carrier certifications
Each licensed network carrier, such as AT&T, Verizon, T-Mobile, Vodafone, and Orange, has requirements for devices operating on their networks. These requirements are tested as part of a carrier device certification program that validates the device behavior and performance in the frequency bands supported by the selected mobile network operator. Typically, once the device is certified with a specific carrier, it can roam globally on foreign networks that have roaming agreements with the specific carrier. When roaming, the device also needs to support the technology and frequency bands in the roaming country. When devices are deployed globally, there are country-specific regulatory certifications that are typically required in addition to the network carrier certification. For devices that are deployed in several countries as part of a global enterprise solution, it is common to have a single network carrier certification when roaming...