Looking to buy a refurbished iPhone 5s through Groupon, but it states the phone is unlocked for all GSM carriers. Can someone tell me what GSM is, and is Koodo such a carrier? I don't have any of the phone specs of the phone other than it's the 5S 16GB.
There are 5 variations of the iPhone 5s, knowing which model will work with Koodo is key. Model A1533 (GSM) is likely the model the seller is referring to and the one that will work with Koodo. (Model A1533 also refers to a CDMA variant, which is not compatible with Koodo, so make sure the seller ships you the correct device).