Iphone 6s Icloud Unlock. Does Metro Pcs Take Unlocked Iphones. You can buy an unlocked phone online from a number of retailers - including Amazon, Best Buy and others - and you can choose from virtually any phone on the market. The only exception is when the customer terminates the contract before the end and will pay the remaining costs, and then the customer device can activate at any time. This guide explains the main differences between a locked and unlocked phone and some methods you can use to explain the two. This is mainly due to the fact that GSM technology was the first of the two and 1990s when cell phones in the end For many years they offered better signal coverage. For those who want to buy a phone as it is not bound by a particular operator, it is important to learn specifications unlocked by factory mobile phones and unlocked mobile phones.