I just sold my iPhone 4S in preparation to buy the new iPhone. I'm probably looking at spending ~750 for the new iPhone. Since I'm already spending that much, it just hit me that I should look into a new unlocked iPhone. Thus, because the unlocked iPhone 4S wasn't available for the Verizon and Sprint network, what's the probability of the new unlocked LTE iPhone working on the Verizon network? Is there a technical issue behind them not working with Verizon or is it a CDMA/GSM limitation. With the introduction of LTE, does that change things? EDIT: On second thought, Verizon's 4G LTE is done through a sim card as well isn't it? Theoretically, if you get an unlocked phone, you should be able to pop in the 4G sim card from ATT or Verizon right?