I would recommend trying the SIM800L shield since it has been known to be used alongside Arduino Pro Micro 3.3V and Arduino Pro Mini 3.3V. You can find it at
EKT or
CNC Lab, though I would recommend buying the one at CNC Lab because Katranji has had some problems with their shields and Arduino boards (even the original models, this is based on my experience).
So things you need to keep in mind though:
1) DON'T power the shield from the Arduino board, use an external power source for that:
2) Sim card's angled corner should be facing outside when inserted into the shield
If you still have any questions or need help, drop me a PM or pass by next Wednesday between 7:30pm and 10pm for Build Night at Lamba Labs Beirut Hackerspace. You can even email me at
contact@lambalabs.com.
Happy building!!