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Table 4 Second use time for refurbished smartphones, assumptions

From: Modelling of different circular end-of-use scenarios for smartphones

Input stream, age (years) 0–1 1–2 2–3 3–4 Avrg
Distribution of age 25% 35% 25% 15%  
Second use time (years) 2.5 2 1.7 1.2 1.93
Total use time (years) 3 3.5 4.2 4.7 3.73