No, you must have unlocked it beforehand. You don’t know what it means?
Don’t worry, we can explain it to you:
If you bought a smartphone at a lower price because of a subscription
period, you need to have paid the full amount of what you owe to the operator
before you can send us your smartphone, or cancel your subscription.
For example, if you bought a smartphone at 300€ for a 2-year
subscription at 50€ a month, you need to have reached the end of the 2-year
contract.
If so, we can retrieve your device and restore it to find it a new
owner.
Otherwise, the operator may block the device.