I'm looking to buy a used and unlocked Samsung galaxy note 5 via ebay. There are some used ones posted there with different models, like sm-n920a (with AT&T), sm-n920t (with T-Mobile,) sm-n920p (with Sprint), sm-n920v (with Verizon). I just know not all of the models are compatible with koodo's network, but I don't know which ones are. Please tell me. Thanks!