The LPA (Local Profile Assistant) is an important part of the consumer devices architecture specified by the GSMA. It is usually implemented as an app on a consumer device such as a smartphone, tablet, or smart watch allowing consumers to choose and change their subscription data when switching to a different mobile network operator. Instead of using the app on a real mobile device, a developer or test engineer can use COMPRION Network Bridge to simulate the behavior of such an LPA app on a PC. When changing the operator subscription, the eUICC and the SM-DP+ server have to communicate with each other. The LPA Simulation allows the engineer to manage the communication between the two (see figure below).