Shervin and I plugged the battery, antennas and earphones into the board. Connected the USB cable to a window7 machine. Installed the drivers from the Adafruit site. Connected through serial using putty.exe and Shabang!! It dialed a voice call successfully using the earplugs. The call was as clear as crystal… We didn’t expect it to be that easy. Wow!
3G Simcom – SIM5320E mobile phone board – https://au.rs-online.com/web/p/radio-frequency-development-kits/1245492/?sra=pstk
3.7V 1S Lipo battery – https://core-electronics.com.au/polymer-lithium-ion-battery-1000mah-38458.html
Capacitive Touch screen https://core-electronics.com.au/search/?q=ada2423
The original Adafruit howto – https://learn.adafruit.com/adafruit-fona-3g-cellular-gps-breakout?view=all
We ran Win7 in a VM using Parallels on Mac OS 10.10.