iPhone 4 as Emergency Radio Communication

A few weeks ago, I’ve inherited two iPhone 4 from my wife and daughter after their iPhone5 upgrades.  Left with unnecessary hardware, I had no choice but to be creative.  I needed to adapt to Apple IOS and then exploit or take advantage of what it can do.  I already know the existence of the ECHOLINK apps and Police Scanner apps but I needed these iPhones to last for a long time without recharging.  After searching Amazon, I chose the New Trent Battery/Case IMP210B  with 2100mAh battery [oh, it was buy 1 get 1 free].  The iphone battery now can last all day without recharging to an AC source.

Inspirations/Ideas:
1. Wireless Networking in the Developing World
2. HSMM-Mesh Networking
3. dd-wrt

Fully revived old iPhone 4 as Ham Radio equipment
 

ECHOLINK, Scanner Radio Apps, MESH Network Access Points
 

Other use of this WIFI iPhone-Mesh Network Client. Read more about HSMM-MESH