Yotam Ariel has not received any gifts yet
So, actually we can't buy local phone numbers in each developing country,
but luckliy Twitter can.
Meet BennuValue (http://www.bennuvalue.com/)
which allow villagers to verify quality solar products via SMS,
as well as report feedback, and request after-sales support.
The program is open-source, if anyone needs..
I also welcome any questions, sharing insights..