A mobile communication device (100, 200 300), comprising: a communication interface (101, 201 301) for wireless communication of the mobile communication device (100, 200 300) with wireless devices over a wireless communication channel , wherein the communication interface (101, 201 301) is coupled to an antenna for wireless communication of the mobile communication device (100, 200 300) via the wireless communication channel with other wireless devices , and a channel simulation unit for simulating modified channel properties of the wireless communication channel , wherein the mobile communication device further comprises: a controllable bypass device for controllably bypassing the channel simulation unit and only performing wirelessly communicating the mobile communication device (100, 200 300) in a standard operation mode of the mobile communication device (100, 200 300), and for performing simulating and wirelessly communicating the mobile communication device (100, 200 300) in a test operation mode of the mobile communication device (100, 200 300), and a mode switch for switching the mobile communication device (100, 200 300) into the test mode, wherein the channel simulation unit is only active when the mobile communication device (100, 200 300) is in the test mode, wherein the channel simulation unit is further configured for modifying properties of any signals that are received or transmitted by the communication interface (101, 201 301) via the antenna 103, 203, 303). a communication interface (101, 201 301) for wireless communication of the mobile communication device (100, 200 300) with wireless devices over a wireless communication channel , wherein the communication interface (101, 201 301) is coupled to an antenna for wireless communication of the mobile communication device (100, 200 300) via the wireless communication channel with other wireless devices , and a channel simulation unit for simulating modified channel properties of the wireless communication channel , wherein the mobile communication device further comprises: a controllable bypass device for controllably bypassing the channel simulation unit and only performing wirelessly communicating the mobile communication device (100, 200 300) in a standard operation mode of the mobile communication device (100, 200 300), and for performing simulating and wirelessly communicating the mobile communication device (100, 200 300) in a test operation mode of the mobile communication device (100, 200 300), and a mode switch for switching the mobile communication device (100, 200 300) into the test mode, wherein the channel simulation unit is only active when the mobile communication device (100, 200 300) is in the test mode, wherein the channel simulation unit is further configured for modifying properties of any signals that are received or transmitted by the communication interface (101, 201 301) via the antenna 103, 203, 303). a controllable bypass device for controllably bypassing the channel simulation unit and only performing wirelessly communicating the mobile communication device (100, 200 300) in a standard operation mode of the mobile communication device (100, 200 300), and for performing simulating and wirelessly communicating the mobile communication device (100, 200 300) in a test operation mode of the mobile communication device (100, 200 300), and a mode switch for switching the mobile communication device (100, 200 300) into the test mode, wherein the channel simulation unit is only active when the mobile communication device (100, 200 300) is in the test mode, wherein the channel simulation unit is further configured for modifying properties of any signals that are received or transmitted by the communication interface (101, 201 301) via the antenna 103, 203, 303). <EOS>