I am currently in the UK and was led to believe that you can swap out the nano SIM in a 5C to use on another network. I tried a SIM at Vodafone UK and the phone simply reads 'No SIM' in the upper left corner.
I only tried the SIM of the employee who swapped it from her Vodafone iPhone 6. That particular SIM was the one that caused my phone to read 'No SIM.' Also, we did try the hard reboot (holding down both buttons) with the SIM installed, to no avail.
skyline1010, thanks for those details. We reasure you that your device is already unlocked http://vz.to/1rOQDDy However, you will need to reach out to your local wireless provider for assistance with provisioning that phone to work on their network.
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