In Ireland and the UK anyone can go to the vodafone website and "top-up" anyone elses cellular phone by inputting the cell number
research 20 countries mobile operators to see if the same is possible globally. This is a feasibility stage and more will follow.
Bid based on providing the yes/no answer for 100 operators across at least 20 countries across all continents.
15 freelancers are bidding on average $157 for this job
I have experience of conducting research on Telecom market in Europe, South Asia, and MENA region. I am sure of collating required info along with 'value-added notes' on each regions across the globe.