In Hong Kong, there exist Hakka communities that uphold traditional marriage customs. Our objective is to arrange an online cultural show that celebrates diverse cultural traditions. Subsequently, we intend to gather feedback from the audience through a mobile survey. Would conducting a mobile survey imply the utilization of a non-probability sampling method?

Anytime! Glad I could be of assistance.

Ah, now I understand. Thank you for providing further clarification on the matter.

The reason it is considered a non-probability sampling method is not due to the instrument used (via mobile), but rather the sampling approach itself. Since you are inviting the entire audience to provide feedback, it does not involve a traditional sampling process initially.