The high cost of cobalt mining in the DRC that many children are paying.
In the Democratic Republic of Congo, many children working in mines say they are physically and sexually abused.
They’re forced to mine cobalt, a metal used to make telephones and computers.
Now, in a landmark lawsuit, a non-profit organisation is accusing five of the world’s largest tech companies of exploiting child labour and being complicit in the deaths of some.
Al Jazeera’s Haru Mutasa reports.