ThomasNichol:
Is this board compatible with arduino GSM library ?
Yes, we are using the same chipset supplier(Quectel). Only the difference is the pin of PowerKey (Pin A3).
You can powerup the Shield by following our website tutorial http://www.grikertech.com/#!gsmgprs-shield-for-arduino/cikc
All of the original library of Arduino can be used for GrikerTech shield.