700 on-the-ground interviews is a lot. On-the-ground implies person to person, right? I think we'd all love to know what were some of your take aways.
I would guess that the idea for this app came from those interviews. It sounds like a good low-hanging fruit, as in good impact and low-cost. Do you have some other ideas lined-up?
The most obvious take-away was that sending money via USSD really isn’t user friendly at all (takes a long time, have to memorize unique and sometimes complex payment codes, etc.).
Another take-away was that users have multiple sim cards (each 'bank' account may be tied with a different sim card). So having one interface to actually make and manage payments could prove extremely valuable.
Interviews themselves are really hard, I struggled to not ask 'leading questions' when I wanted the interviewee to say what I wanted to hear vs what was going to be an even more valuable insight to us.