How Much CO2 Does a Refurbished Phone Really Save?

Sustainability has become a selling point, and unfortunately a buzzword too. Time for an honest look at the numbers: how much does it really help the climate to buy a phone used instead of new?

The core problem: manufacturing dominates

Unlike a car, a smartphone's ecological footprint isn't created during use but in the factory. Studies, including those by the French environment agency ADEME and by device manufacturers themselves, consistently reach the same conclusion: around three quarters to over 80 percent of a smartphone's lifecycle emissions occur during raw material extraction, manufacturing and transport. Charging it over the years accounts for only a small remainder.

What that means for buying used

The consequence is simple: every device that gets a second life avoids the biggest block of emissions, namely the production of a new device. ADEME puts the savings of a refurbished smartphone compared to buying new at around 80 to 90 percent of the environmental impact, depending on the category (greenhouse gases, raw material consumption, water). Even when parts like the battery or display are replaced during refurbishment, the balance remains clearly positive.

More than CO2: raw materials and e-waste

A smartphone contains over 50 different raw materials, including cobalt, lithium, rare earths and gold, often mined under problematic conditions. A device that stays in use longer directly reduces this hunger for raw materials. At the same time, e-waste is one of the fastest-growing waste streams worldwide, and every phone that stays in use is one that doesn't end up in a drawer or in the bin.

The biggest lever: extending the usage period

The most sustainable strategy is unspectacular: use devices longer. In concrete terms that means: repair instead of replace when the display or battery starts to fade, sell or trade in your old device when you switch, so it lives on instead of gathering dust, and choose refurbished instead of new when you buy. Each of these steps extends the lifespan of technology whose production emissions have long since been released.

Staying honest: what refurbished is not

Buying used is still consumption, and the most sustainable phone is the one you already own and keep using. But when a switch is due, the ecological difference between new and refurbished is enormous, and you get it without sacrifice: tested technology with a 1-year warranty, just without new factory emissions.

Conclusion

A refurbished phone saves the largest share of a new device's emissions because it avoids production, the dominant factor in the climate balance. Read more about our approach on the sustainability page, and find devices with a second life in the shop.