Blame Apple? And you believe this because....
Explain how Apple makes Model A1533 of the iPhone 5S which supports AT&T, T-Mobile and Verizon. Sprint required a specific model for itself, A1453.
Edited to add: "Although a phone manufacturer may manufacture the same device model and name for different wireless carriers offering wireless service in the United States, Sprint devices are specifically designed to function on Sprints network and Sprints frequencies and technologies."
From: »
www.sprint.com/legal/unl ··· icy.htmlSo, who built in this lock? You really believe it was Apple?