Engineer turned social entrepreneur Sabri Cheriha hunches over a washing machine at a small depot in a suburb of Tunisia's capital, the unassuming home of a startup he launched to tackle the country's mounting electronic waste problem.

Cheriha said there were currently about eight million household appliances and nine million cellphones in use across Tunisia, but once these devices break down or are replaced, "there's no service to properly dispose of them".

WeFix, the startup that won him a second-place regional social entrepreneur award last year, stands out by offering an "all-in-one service", providing........

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