Yes, when you request a device model change you are expected to return the current device following the instructions we will provide. If you do not return the current device, the corresponding monthly fee will continue being charged in addition to the monthly fee for the device you have recently received.
HMD Global Oy UK Branch, of 2 Kingdom Street, Level 2, London, Paddington Central, W2 6BD, registered in England and Wales under Company No FC033770, UK Establishment No BR018857, is authorised and regulated by the Financial Conduct Authority under firm reference No 949221.