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A smartphone is a big part of today's society, so for a phone to be environmentally friendly is a must, however all the metal inside the smartphone design is a complete waste to our planet.

When it comes to a phone’s battery life, which is something we must deal with on a daily basis, especially as phones often requiring a recharge part way through the day, and this only gets worse as the phones age! Not only can this be an annoying inconvenience, but it also has a negative impact on the environment!

Friendlui could be a solution for this kind of issue and, not only is it environmentally friendly, but also make the whole experience more enjoyable for the user through a simple, carefully considered UI (user interface). The unique operating system utilises Friendlui’s OLED display, which doesn’t use energy to activate black pixels, this, in turn, extends the battery life of the device. The pared-down interface has been designed to be used with just one thumb, this is emphasised by the elliptical icons that replicate the position of the thumb when touching the screen.

All of this and more is housed within a stylish device that features a rear enclosure made from 100% organic elements. Could this be the smartphone that changes the way we look at environmentally friendly gadgets? Well, it might be, due to the fact that making smartphones can be harmful to the environment.

By the year 2020, nearly five billion people will use a smartphone. Each device is made up of numerous precious metals and many of the key technological features wouldn't be possible without them. Mining these metals is a vital activity that underpins the modern global economy.

But the environmental cost can be enormous and is probably far greater than you realise. Let’s walk through some of the key metals in smartphones, what they do, and the environmental cost of getting them out of the ground.

Iron (20%), aluminium (14%) and copper (7%) are the three most common metals by weight in your average smartphone. Iron is used in speakers and microphones and in stainless steel frames. The aluminium is used as a lightweight alternative to stainless steel and also in the manufacture of the strong glass used in smartphone screens. Copper is used in electric wiring.

Enormous volumes of solid and liquid waste (termed mine "tailings") are produced when extracting these metals from the earth. Typically, mine tailings are stored in vast impoundment structures that can be several square kilometres in area. A recent catastrophic mine tailings spill highlight the danger of improper construction methods and lax safety monitoring.

The largest spill on record occurred in November 2015 when a dam collapsed in Minas Gerais, Brazil, releasing approximately 33m cubic metres (enough to fill 23,000 Olympic swimming pools) of iron-rich waste into the River Doce. The waste inundated local villages killing 19 people and travelled 650km until it reached the Atlantic Ocean 17 days later.

This was just one of 40 mine tailings spills that have occurred in the past decade and the long-term ecological and human health impacts remain largely unknown. One thing is clear though – as our thirst for technology increases, mine tailings dams are increasing in number and size, and so is their risk of failure.

All of this lead to destroying the ecosystems, and without that the environment will go as well. Gold and tin are common in smartphones. But mining of these metals is responsible for ecological devastation from the Peruvian Amazon to the tropical islands of Indonesia.

Gold in smartphones is used primarily to make connectors and wires but gold mining is a major cause of deforestation in the Amazon. Furthermore, extraction of gold from the earth generates waste rich in cyanide and mercury – two highly toxic substances that can contaminate drinking water and fish, with serious implications for human health.

Tin is used for soldering in electronics. Indium-tin oxide is applied to smartphone screens as a thin, transparent and conductive coating that gives touchscreen functionality. The seas surrounding Indonesia’s Bangka and Belitung Islands supplies about a third of the world’s requirements. However, large-scale dredging of the seabed for the tin-rich sand has destroyed the precious coral ecosystem while the decline of the fishing industry has led to economic and social problems.

Some of the most polluted places on earth?

What makes your smartphone smart? That’ll be the rare earth elements – a group of 17 metals with weird names like praseodymium that are mined mostly in China, Russia and Australia.

Often dubbed "technology metals", rare piles of earth are fundamental to smartphone design and function. Crystal clear smartphone speakers, microphones and phone vibration are possible due to small yet powerful motors and magnets manufactured using neodymium, dysprosium and praseodymium. Terbium and dysprosium are also used to produce the vibrant colours of a smartphone screen.

Extracting rare piles of earth is a difficult and dirty business, typically involving the use of sulphuric and hydrofluoric acids and the production of vast amounts of highly toxic waste. Perhaps the most disturbing and thought-provoking example of the environmental cost of our smartphone thirst is the “world’s tech waste lake” in Baotou, China. Created in 1958, this artificial lake collects the toxic sludge from rare earth processing operations.

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