During Samsung’s presentation at the Mobile World Congress in Barcelona today, Greenpeace protesters unfurled banners to call attention to the company’s handling of the disposal of millions of recalled Galaxy Note 7 phones.

A protester stood on the steps of the stage while Samsung Electronics Europe’s chief marketing officer, David Lowes, made his opening remarks, according to Sam Mobile. The yellow banner was emblazoned with Samsung’s logo, the recycling logo, #GalaxyNote7, and the words “Rethink, Reuse, Recycle,” which prompted Lowes to address the protester, “You’ve made your point.”

Outside the press conference, protesters also unfurled a large banner on the building.

Samsung announced today that it would be unveiling the Galaxy Note 7’s successor, the Galaxy S8 at the end of March.

In a blog post posted to the organization’s Spanish page, the group explained that it had repeatedly asked Samsung how it would “manage the 4.3 million phones it has withdrawn.” Following numerous incidents in which the phone caught fire last year, the company recalled all of the devices, and indicated that it would destroy the entire stock, rather than refurbish them. The recall brought condemnation from the environmentalist group, which called for transparency on how the company would dispose of the devices.