Here in Kenya most phone users (about 95%) are on a pre pay plan, ie you pay first then the money you have paid decrements as you talk. 1US dollar will give yo

Here in Kenya most phone users (about 95%) are on a pre pay plan, ie you pay first then the money you have paid decrements as you talk. 1US dollar will give you about 15 minutes of talk time. What we want to do is give users about 2minutes of free talk time for every ad they get from us.