A typical smartphone contains roughly eight to ten rare earth elements, most of them in tiny quantities spread across the display, speakers, camera, and vibration motor. The largest share by weight is neodymium, which forms the core of the miniature magnets that make your phone vibrate and produce sound. The rest play specialized roles in generating screen colors, improving camera optics, and stabilizing magnets at high temperatures.
Rare Earth Elements in Your Phone’s Display
Your smartphone screen relies on rare earth phosphors to produce accurate, vivid color. Phosphors are substances that absorb energy and re-emit it as visible light, and different rare earths produce different colors. Europium is the industry standard for red light, producing a sharp red emission that helps screens achieve over 95% of the standard color gamut used in high-definition video. Terbium handles the green end, delivering narrow green emissions that are critical to overall screen brightness, especially in OLED displays. Yttrium serves as the host material for many of these phosphors. In LED backlighting, yttrium aluminum garnet converts blue LED light into yellow, which combines with the blue to create the white backlight behind an LCD panel.
Several other rare earths show up in display technology in smaller roles. Lanthanum, gadolinium, praseodymium, and dysprosium are all listed as display materials in smartphone component breakdowns, where they contribute to color tuning and optical performance. Gadolinium, for instance, appears in green phosphor compounds alongside terbium.
Magnets: Where Most Rare Earths Live
The single biggest use of rare earths in a phone is the neodymium iron boron magnet. These magnets are found in the speakers, microphone, and the vibration motor that buzzes when you get a notification. A typical neodymium magnet is about 29 to 32% neodymium by weight, with iron making up most of the rest. What makes these magnets special is their strength relative to their size. They produce a magnetic field strong enough to drive a tiny speaker cone with clear audio, all within a component smaller than a fingernail.
Dysprosium is the key supporting player in these magnets, making up roughly 0.8 to 1.2% of the alloy by weight. Its job is thermal stability. Without dysprosium, neodymium magnets lose their magnetism at the temperatures a phone can reach during heavy use or charging. Praseodymium also appears in speaker and vibration motor magnets, sometimes partially substituting for neodymium. Gadolinium rounds out the magnet mix, helping fine-tune magnetic properties.
Camera Lenses and Optical Glass
Lanthanum plays a quiet but important role in your phone’s camera. Adding lanthanum oxide to glass increases its refractive index (how sharply it bends light) while keeping dispersion low, meaning light doesn’t split into rainbow fringes. This combination is what allows smartphone camera lenses to be both tiny and optically sharp. The same property makes lanthanum valuable in infrared-absorbing glass, which helps manage how the camera sensor handles different wavelengths of light.
The Full List
Here are the rare earth elements found in smartphones and their primary roles:
- Neodymium: main component of speaker, microphone, and vibration motor magnets
- Dysprosium: stabilizes magnets at higher temperatures
- Praseodymium: used in magnets alongside neodymium, also appears in display phosphors
- Europium: produces red light in the display
- Terbium: produces green light in the display
- Yttrium: host material for display phosphors and LED backlighting
- Lanthanum: improves camera lens optics, also used in display and speaker components
- Gadolinium: appears in both display phosphors and magnet alloys
- Cerium: used in speaker magnets and as a glass polishing compound
Additional rare earths like samarium, scandium, erbium, holmium, thulium, ytterbium, lutetium, and promethium are sometimes listed as present in trace amounts, but their functional roles in phones are minimal compared to the elements above.
How Much Is Actually in There
The total amount of rare earth material in a single phone is small, likely less than a gram combined. Neodymium accounts for the largest share because of its role in magnets, while elements like europium and terbium are present in milligram quantities in the display phosphors. The tiny amounts per device are part of what makes recycling these materials so difficult. Recovering a fraction of a gram of neodymium from a phone magnet is technically possible but not yet economically practical at scale, which is why global recycling rates for rare earths from electronics remain extremely low.
Why These Elements Matter
Rare earths are called “rare” not because they’re scarce in the Earth’s crust, but because they rarely occur in concentrations high enough to mine economically. Most of the world’s supply comes from a handful of countries, which makes pricing volatile and supply chains fragile. Dysprosium is a good example: its price has swung dramatically, gaining over 160% in value between early 2025 and early 2026. Neodymium follows similar patterns. These price swings ripple through the electronics industry because no commercially viable substitutes exist for most of these applications. No other element produces red display light as efficiently as europium. No other magnet material matches neodymium’s strength-to-size ratio.
This combination of irreplaceability and concentrated supply is why rare earth elements in phones get so much attention, even though the physical quantity in any single device is barely enough to see.