Technology
Visualizing the Critical Metals in a Smartphone
Subscribe to the Elements free mailing list for more like this
Visualizing the Critical Metals in a Smartphone
In an increasingly connected world, smartphones have become an inseparable part of our lives.
Over 60% of the world’s population owns a mobile phone and smartphone adoption continues to rise in developing countries around the world.
While each brand has its own mix of components, whether it’s a Samsung or an iPhone, most smartphones can carry roughly 80% of the stable elements on the periodic table.
But some of the vital metals to build these devices are considered at risk due to geological scarcity, geopolitical issues, and other factors.
Smartphone Part | Critical Metal |
---|---|
Touch Screen | indium |
Display | lanthanum; gadolinium; praseodymium; europium; terbium; dysprosium |
Electronics | nickel, gallium, tantalum |
Casing | nickel, magnesium |
Battery | lithium, nickel, cobalt |
Microphone, speakers, vibration unit | nickel, praseodymium, neodymium, gadolinium, terbium, dysprosium |
What’s in Your Pocket?
This infographic based on data from the University of Birmingham details all the critical metals that you carry in your pocket with your smartphone.
1. Touch Screen
Screens are made up of multiple layers of glass and plastic, coated with a conductor material called indium which is highly conductive and transparent.
Indium responds when contacted by another electrical conductor, like our fingers.
When we touch the screen, an electric circuit is completed where the finger makes contact with the screen, changing the electrical charge at this location. The device registers this electrical charge as a “touch event”, then prompting a response.
2. Display
Smartphones screens display images on a liquid crystal display (LCD). Just like in most TVs and computer monitors, a phone LCD uses an electrical current to adjust the color of each pixel.
Several rare earth elements are used to produce the colors on screen.
3. Electronics
Smartphones employ multiple antenna systems, such as Bluetooth, GPS, and WiFi.
The distance between these antenna systems is usually small making it extremely difficult to achieve flawless performance. Capacitors made of the rare, hard, blue-gray metal tantalum are used for filtering and frequency tuning.
Nickel is also used in capacitors and in mobile phone electrical connections. Another silvery metal, gallium, is used in semiconductors.
4. Microphone, Speakers, Vibration Unit
Nickel is used in the microphone diaphragm (that vibrates in response to sound waves).
Alloys containing rare earths neodymium, praseodymium and gadolinium are used in the magnets contained in the speaker and microphone. Neodymium, terbium and dysprosium are also used in the vibration unit.
5. Casing
There are many materials used to make phone cases, such as plastic, aluminum, carbon fiber, and even gold. Commonly, the cases have nickel to reduce electromagnetic interference (EMI) and magnesium alloys for EMI shielding.
6. Battery
Unless you bought your smartphone a decade ago, your device most likely carries a lithium-ion battery, which is charged and discharged by lithium ions moving between the negative (anode) and positive (cathode) electrodes.
What’s Next?
Smartphones will naturally evolve as consumers look for ever-more useful features. Foldable phones, 5G technology with higher download speeds, and extra cameras are just a few of the changes expected.
As technology continues to improve, so will the demand for the metals necessary for the next generation of smartphones.
This post was originally featured on Elements
Brands
How Tech Logos Have Evolved Over Time
From complete overhauls to more subtle tweaks, these tech logos have had quite a journey. Featuring: Google, Apple, and more.
How Tech Logos Have Evolved Over Time
This was originally posted on our Voronoi app. Download the app for free on iOS or Android and discover incredible data-driven charts from a variety of trusted sources.
One would be hard-pressed to find a company that has never changed its logo. Granted, some brands—like Rolex, IBM, and Coca-Cola—tend to just have more minimalistic updates. But other companies undergo an entire identity change, thus necessitating a full overhaul.
In this graphic, we visualized the evolution of prominent tech companies’ logos over time. All of these brands ranked highly in a Q1 2024 YouGov study of America’s most famous tech brands. The logo changes are sourced from 1000logos.net.
How Many Times Has Google Changed Its Logo?
Google and Facebook share a 98% fame rating according to YouGov. But while Facebook’s rise was captured in The Social Network (2010), Google’s history tends to be a little less lionized in popular culture.
For example, Google was initially called “Backrub” because it analyzed “back links” to understand how important a website was. Since its founding, Google has undergone eight logo changes, finally settling on its current one in 2015.
Company | Number of Logo Changes |
---|---|
8 | |
HP | 8 |
Amazon | 6 |
Microsoft | 6 |
Samsung | 6 |
Apple | 5* |
Note: *Includes color changes. Source: 1000Logos.net
Another fun origin story is Microsoft, which started off as Traf-O-Data, a traffic counter reading company that generated reports for traffic engineers. By 1975, the company was renamed. But it wasn’t until 2012 that Microsoft put the iconic Windows logo—still the most popular desktop operating system—alongside its name.
And then there’s Samsung, which started as a grocery trading store in 1938. Its pivot to electronics started in the 1970s with black and white television sets. For 55 years, the company kept some form of stars from its first logo, until 1993, when the iconic encircled blue Samsung logo debuted.
Finally, Apple’s first logo in 1976 featured Isaac Newton reading under a tree—moments before an apple fell on his head. Two years later, the iconic bitten apple logo would be designed at Steve Jobs’ behest, and it would take another two decades for it to go monochrome.
-
Green1 week ago
Ranked: The Countries With the Most Air Pollution in 2023
-
AI2 weeks ago
The Stock Performance of U.S. Chipmakers So Far in 2024
-
Markets2 weeks ago
Charted: Big Four Market Share by S&P 500 Audits
-
Real Estate2 weeks ago
Ranked: The Most Valuable Housing Markets in America
-
Money2 weeks ago
Which States Have the Highest Minimum Wage in America?
-
AI2 weeks ago
Ranked: Semiconductor Companies by Industry Revenue Share
-
Travel2 weeks ago
Ranked: The World’s Top Flight Routes, by Revenue
-
Countries2 weeks ago
Population Projections: The World’s 6 Largest Countries in 2075