MWC 2025: Unveiling a Phone that Changes Color with Temperature

At the Mobile World Congress 2025, a groundbreaking innovation was unveiled: a unique smartphone that alters its color based on temperature changes.
Tl;dr
Unveiling the Chameleon: Realme 14 Pro+
This week, the globe’s attention was drawn to Barcelona, the host city for the Mobile World Congress, where a battalion of curiosities and novelties were unfurled. The main stars of the show were, unsurprisingly, smartphones.
Unusual Offering from a Chinese Manufacturer
One of the curiosities at MWC 2025 was courtesy of a Chinese manufacturer, Realme, who introduced an intriguing smartphone, the Realme 14 Pro+. This device, beyond its technical specifications, distinguishes itself from other market offerings with its unique color-changing casing that reacts to temperature changes.
Realme 14 Pro+: A Smartphone that Changes Color
As CNET underscores, this Realme-branded phone has been on the market since late last year. Nevertheless, the Asian firm seized the opportunity to showcase it to a wider audience at the Mobile World Congress.
On the surface, the Realme 14 Pro+ seems to offer standard features. It boasts a:
However, the phone’s unique selling point is its chameleon-like ability. When exposed to cold (below 16 degrees Celsius), the thermochromic pigments in its casing react and change from a cream hue to a more intense blue. This technology is reminiscent of a pigment recently developed by researchers at the Massachusetts Institute of Technology (MIT) for creating art that changes in response to stimuli.
Water Resistance and Color Magic
The Realme 14 Pro+, in addition, is water-resistant, as demonstrated in the promotional video. This is a logical feature, as it allows the phone to showcase its color-changing ability. The manufacturer explains this “magic”: “During use, cold-sensitive fusion fibres allow a color-changing effect, creating a dreamy blue texture contrasted with white and gold at temperatures below 16 degrees.”
Without a doubt, the Realme 14 Pro+ is one of the intriguing highlights from the recent edition of the Mobile World Congress.