The default phone ID is the International Mobile Equipment Identity (IMEI) number of the device that Device Central is emulating. Each Global System for Mobile Communications (GSM) and Universal Mobile TeleCommunications System (UMTS) mobile device has a unique IMEI number. The 15‑digit number identifies the origin, model, and serial number of the mobile device.
Specifying a default phone ID instructs Adobe Device Central to use that number as the default IMEI for any device tested.