---
title: "Methodology"
description: "Results for the survey are based on face-to-face interviews conducted under the direction of D3 Systems Inc. The results are based on national samples. More details about our international survey methodology and country-specific sample designs are available here."
date: "2019-11-20"
authors:
  - name: "Laura Silver"
    job_title: "Associate Director, Global Attitudes Research"
    link: "https://www.pewresearch.org/staff/laura-silver/"
  - name: "Emily A. Vogels"
    job_title: "Former Research Associate"
    link: "https://www.pewresearch.org/staff/emily-a-vogels/"
  - name: "Mara Mordecai"
    job_title: "Former Research Assistant"
    link: "https://www.pewresearch.org/staff/mara-mordecai/"
  - name: "Jeremiah Cha"
    job_title: "Former Research Assistant"
    link: "https://www.pewresearch.org/staff/jeremiah-cha/"
  - name: "Raea Rasmussen"
    job_title: "Intern"
    link: "https://www.pewresearch.org/staff/raea-rasmussen/"
  - name: "Lee Rainie"
    job_title: "Former Director, Internet and Technology Research"
    link: "https://www.pewresearch.org/staff/lee-rainie/"
url: "https://www.pewresearch.org/internet/2019/11/20/mobile-divides-emerging-economies-methodology/"
---

# Methodology

Results for the survey are based on face-to-face interviews conducted under the direction of D3 Systems Inc. The results are based on national samples. More details about our international survey methodology and country-specific sample designs are [available here](http://www.pewresearch.org/methods/interactives/international-methodology/mobile-technology-and-its-social-impact/all-country/all-year).

---

**Next:** [Appendix A: About the focus groups](https://www.pewresearch.org/internet/2019/11/20/mobile-divides-emerging-economies-appendix-a-about-the-focus-groups.md)