The NCN4555 Evaluation Board has been designed for a quick evaluation of the NCN4555 SIM card interface device. Among its main characteristics, this evaluation board has been constructed to be easily interfaced with customer systems through an HE10 16-pin connector and an embedded SIM card socket. It can also be evaluated as a standalone evaluation board. The test procedure considers the last mode of evaluation through two different portions, primarily the linear dc/dc converter (LDO) and the level shifter function. This evaluation board can be used to evaluate the device performance and allows the user to place the NCN4555 device in a real application environment. When the intention is to evaluate the device considering the specifications given in the datasheet it is important to take into account the supplementary circuitry which may introduce additional power consumption.