Samsung is facing a lot of issues since the launch of its flagship smartphone Galaxy Note 7, which has a high record of batteries failing, leading to personal and property damage.

Samsung finally issued an official recall of Note 7 when the replacement started catching on fire in early October.

On October 10, Samsung issued a statement that it is halting sales of the Galaxy Note 7 globally and encouraging consumers to return it as soon as possible. Samsung has an updated Note 7 recall page with information on how to contact various U.S. retailers for a refund or exchange.

With several warnings from simply turning it off to actually banning the Note 7, Samsung decided to dump all the 3 million sold and 1.2 million unsold units of the Note 7.

So far Samsung is slowly dealing with the fire explosion, recalls and replacements. However, new concerns are arising when Samsung announced to dump 4.2 million Note 7 units.

Greenpeace, an international NGO for environment related issues, is asking details from Samsung on how it will dispose of the millions of Note 7 smartphones.

Theoretically, if the South Korean tech company chooses to dump them, it would create the equivalent of about 28 shipping containers of toxic waste, according to the environmental advocacy group.

Greenpeace is on run for the safe dumping or recycle of Note 7. They have highlighted that this much amount of phones would contain 20 metric tons of cobalt, one metric ton of tungsten, about 100 kilos of gold and more than 1,000 kilos of silver, in a report from Greenpeace and a German research institute.

Stay tuned for more updates on how the Korean tech giant will deal with the disposal of the Samsung Galaxy Note 7.