Mark Shoebridge from biNu discussed using feature phones for mobile research. Some key challenges are lower bandwidth, smaller screens, and lack of apps. biNu conducted surveys on feature phones for the UN and a beverage company in India. The UN survey received over 130,000 responses from 150+ countries in just 2 weeks. The beverage survey had a 4% abandon rate and over 50% completed diaries when using daily incentives. While internet and smartphone penetration is growing, feature phones still dominate in many emerging markets, so they remain an important platform for reaching large audiences.