Wofa's doorbell is a cell phone / Wofa's cell phone is a door bell
At ICA'07, Araba Sey told this story:
"Wofa is a fisherman in Prampram, a village just outside the capital of Ghana. His home does not have an official address, but he has his mobile phone number written over the doorway so that he is always reachable. He wishes he could do more than just make and receive calls on his phone, but he cannot read or write in English. He bought his phone in 2005 mainly because he believed it would help him with his work. There is some evidence that mobile phones have become an important business resource for fishermen in Ghana. However, trying to associate particular poverty reduction benefits with use of mobile phones by poor people is likely to lead to some surprises, and even disappointment. Because, as Wofa said to me when I asked how he and his fellow fishermen use mobile phones, “We use it different, different”. Meaning we use it in many different ways."
Source: Araba Sey, "Mobile phones and the pursuit of sustainable livelihoods: Why connectivity matters", Prepared for the 57th International Communication Association Pre-conference Workshop “Mobile Communication: Bringing us together or Tearing Us Apart?” May 23-24, 2007, San Francisco, California