The motorized handset positioner HHP IV allows manufacturers of communication devices with handsets, cordless phones, mobile phones, smartphones (with display speaker) and tablets of any design to test their device faster, more precisely and more economically. Mounted to an artificial head measurement system (HMS II.3, HMS II.3-LN, HMS II.4) HHP IV automatically places the device under test in a wide range of standard or user-defined positions. This enables the handset positioner to simulate even complex user behavior reproducibly. In addition, HHP IV allows adjusting the handset application force to the outer ear of the artificial head with high precision (according to ITU-T Recommendation P.64).