As a result of the first, qualitative phase of the study, four dimensions of nomophobia were identified, namely not being able to communicate, losing connectedness, not being able to access information and giving up convenience. Using the findings from this phase, a 20-item NMP-Q was created. The results of the second, quantitative phase showed that the four dimensions were connected to the theoretical construct of nomophobia and that the NMP-Q produced valid and reliable scores.