The amount of data transmitted by the program is typically very small, and so doesn't cost very much. For example:
- we downloaded a 270 question form (which was 272kb in size) to the phone -- it cost
- we uploaded one record (a complete form) for the 270 question form to the server -- it cost
- we uploaded 4 records for a 17 question form to the server -- it cost
The bottom line is that the files transmitted are very, very small. I would suggest that if you are going to be using EpiSurveyor for data collection in a particular country that your team install the software and a form on their phone, configure the phone's internet settings, then
- check their mobile minutes
- create a form and download to the phone
- check their mobile minutes again
- enter some records and upload the data
- check their mobile minutes again
This will very quickly give you an idea of how very few minutes are usually consumed by sending and receiving data with EpiSurveyor.