
Interesting piece on AfriGadget about mobile phone hacking in rural Africa:
One of the more interesting innovations is the development of a dual SIM card hack so that users can access multiple carriers.
This product has two SIM card slots in a single phone - primarily to support price sensitive/prudent consumers who wish to optimise their call costs by maintaining SIM cards from two different phone operators. As in many countries - calls to a customer using a different Ghanaian operator cost slightly more than those on the same network.
Mobile Phone Ingenuity in Africa
http://blog.makezine.com/archive/2008/04/mobile_phone_hacking_in_a.html