A Telephone survey is any type of study that can be conducted over the telephone with a large quantity of participants, where images or video are not required. The participants are asked to answer a series of questions, usually with multiple choice or yes/no answers.
Telephone is still an important tool, if it is a tool used by your target audience. For example, telephone can be a great resource if trying to reach people in rural counties with low population density. It is also still a viable tool for B2B, especially with in the context of in-depth interviews.
Telephone is a good supplement to other methodologies to ensure representation of populations who may not be online, i.e. they don’t have computers, internet or smartphones. Telephone surveys are still critical to certain research targeted to professionals, i.e. doctors, lawyers, engineers.
Weakness & limitations