When I traveled to Tanzania, the biggest shock was seeing how many people had cell phones. Following my trip, I found it was a growing trend all over the world. Cell phones in 3rd world are being used to transfer money, check for weather for crops, medical devices as well as organization and logistics around cities and villages all over the world. Cell phones will be a key resource in 3rd world development. Currently, rural areas don't have the electricity to charge their own cell phone, paying a shop keeper to charge their phone every day. With the money used to charge their cell phones, it can be invested in a crank charger with a USB port, having a rechargeable battery.
In addition, another problem I witnessed in electricity was light. Their lives revolved around daylight, waking up with the sun rose and going to bed when the sun set. With light, they're able to get more done in a day and be more efficient, as well as provide children the ability to study and do homework after dark. With a crank cell phone charger and light, it will help 3rd world areas around the world thrive in their daily lives.