SurveyCTO Collect for Android is a powerful tool for mobile data collection (a.k.a. Computer Assisted Personal Interviews, or CAPI) and telephone surveying (a.k.a. Computer Assisted Telephone Interviews, or CATI). In mobile-data-collection applications, Collect allows you to collect data offline so that you can conduct household interviews, facility inspections, or any other kind of data collection even in remote, poorly-connected environments. In telephone-survey applications, Collect can take over as your default phone app, deeply integrating call-management features with form-filling features, effectively turning any Android device into a mobile call center. Survey forms can launch and manage phone calls, you can receive calls within the app, and the entire user experience has been optimized for interviewing. For multi-use devices, Collect makes it easy to switch between Collect and other phone apps, so that you're always using the right phone app for your needs. A setting allows you to use Collect as your default phone app either on-demand, whenever-running, or always. Collect is a core part of the overall SurveyCTO product, which also includes web and desktop software components. After data has been collected with Collect, it is uploaded to the SurveyCTO server when an Internet connection is available or transferred to a supervisor's laptop over a local (offline) wi-fi connection. SurveyCTO was initially built on the Open Data Kit (ODK) open-source platform, and has specialized in data quality, data security, and overall reliability. Learn more at https://www.surveycto.com or in the documentation at https://docs.surveycto.com.