hello all….. I am getting ready to purchase a new Apple IPad Air 4th generation for a upcoming long term trip to the PL. Is there a preference to GSM, CDMA, UNLOCKED or other. My understanding is Apple products will connect globally without any headaches …. Understanding there are spotty connections in many areas…….and better in others. It seems from my research that some “model #’s are made for different markets. Options / opinions looking for insights on connecting wifi while on the road in the Pl. with Apple products…..