The invention provides for the use of a disinfectant consisting of a mixture of ethanol, 1-propanol and 2-propanol, an antimicrobial, amphoteric surfactant and water for disinfection of display screen surfaces of electronic devices. Mobile communication devices, especially those which are used in the medical sector, have plastic surfaces, more particularly in the form of display screen surfaces. These cannot be disinfected with conventional alcoholic disinfectants. The disinfectant used in accordance with the invention enables effective eradication of microorganisms such as, more particularly, fungi, bacteria and yeasts, with simultaneously good material compatibility.