Called 'Circular', the service will also recycle, refurbish and re-subscribe devices returned to the firm or donate them to charitable causes in order to keep them out of landfill, the Finnish tech firm said.

The longer a user keeps their phone, the Circular programme will reward them with an increasing number of 'Seeds of Tomorrow' credits. These eco credits can then be put towards a range of global sustainability and charitable causes, such as planting trees with Ecologi, helping clean pollution from rivers with Clear Rivers, or providing connectivity to those in need.

When a user wishes to upgrade their phone or tablet, they can return it to Nokia, who will securely wipe the device before refurbishing it either to send to another Circular subscriber or donating it to someone in need.

The subscription service involves a £30 set-up fee, with phones and tablets then available for a range of prices, starting at £12.50 a month for a Nokia...