New to developing on the Verizon Wireless Network? Here is some stuff you should know when designing your IoT application. **[About Device IDs](/docs/standard-apis/connectivity-management/guides/working-with-verizon-wireless/about-device-ids)** - Descriptions of the different types of device identifiers, such as MDN, MEID, SIM, and ICCID. **[About Device States](/docs/standard-apis/connectivity-management/guides/working-with-verizon-wireless/about-device-states)** - Descriptions of Active, Suspended, and Deactive device states. **[About Device Reachability](/docs/standard-apis/connectivity-management/guides/working-with-verizon-wireless/about-device-reachability)** - An introduction to device reachability monitoring. **[About Non-IP Data Delivery (NIDD)](/docs/standard-apis/connectivity-management/guides/working-with-verizon-wireless/about-non-ip-data-delivery)** - An introduction to sending non-IP data to and from devices. **[Working with eUICC Devices](/docs/standard-apis/connectivity-management/guides/working-with-verizon-wireless/working-with-euicc-devices)** - An introduction to activating and working with eUICC Devices. **[Service Provisioning Rules](/docs/standard-apis/connectivity-management/guides/working-with-verizon-wireless/service-provisioning-rule)** - General rules for suspending, restoring, and deactivating service, plus rules for changing device service plans and swapping hardware. **[Network Usage Guidelines](/docs/standard-apis/connectivity-management/guides/working-with-verizon-wireless/iot-network-usage-guidelines)** - Guidelines for how your devices can be good citizens on the Verizon network, such as how often they can connect and how to recover from a network outage. **[About Callback Services](/docs/standard-apis/connectivity-management/guides/callbacks/about-callback-services)** - An introduction to callback services (webhooks) used by the Connectivity Management API. **[ThingSpace Data Retention Policy](/docs/standard-apis/connectivity-management/guides/working-with-verizon-wireless/data-retention-policy)** - A description of the amount of time that various types of data records are kept for retrieval. **[Data Types and Units of Measure](/docs/standard-apis/connectivity-management/guides/working-with-verizon-wireless/data-types-and-unit-of-measure)** - A list of the valid data types used in the Connectivity Management API.