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Device aims to reduce dependence on sockets and bring clean energy to places with little electrical infrastructure
Battery life continues to be one of the biggest challenges for smartphone manufacturers. Even with advances that increase charging capacity to impressive numbers, such as the 4500 mAh of the most modern models, it is still difficult to meet the needs of users who spend long hours away from a power outlet.
In this scenario, the Chinese manufacturer Infinix presented a bold proposal during the Mobile World Congress (MWC) 2025, held in Barcelona: a phone with an integrated solar panel.
This innovation goes beyond the promise of more autonomy. It represents a potential disruption in the way we charge our devices.
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Solar energy at the heart of design
Infinix's concept combines two approaches: a smartphone with a solar panel built into the back and an additional cover that also captures sunlight.
Both options are equipped with perovskite solar cells, an emerging technology that stands out for its lightness, low cost and efficiency in absorbing a wider range of light — even in low-light environments.
This new type of solar cell represents a promising alternative to traditional silicon cells. They are thinner, cheaper to produce and more versatile, opening up space for creative applications, such as this proposal from Infinix.
Intelligent Regulation Technology
What makes the system even more impressive is the voltage management technology used in the device. Called Maximum Power Point Tracking (MPPT), this system regulates the energy captured and prevents the device from overheating.
Additionally, the phone uses artificial intelligence to automatically adjust charging levels based on solar exposure and temperature, optimizing energy performance.
According to Infinix, the system is capable of generating up to 2W of power — enough to keep the phone constantly charged when not in use.
Functional and adaptable proposal
During the event, functional units of the prototype were displayed, reinforcing that the project is not just a conceptual idea.
The solar cover developed as an accessory also attracted attention. It connects to the phone via small side contacts and can be easily replaced with a conventional cover, depending on the occasion.
In emergencies, such as power outages or lack of access to electricity, this case can become a practical and immediate solution. On sunny days, the user can continue using the cell phone normally while it recharges with clean energy.
Beyond Energy: Design and Customization
In addition to solar charging, Infinix also presented its new model with second-generation E-Ink screen.
The difference lies in the ability to change the color of the rear panel without needing an external source. Personalization can be done based on visual patterns, weather or images chosen by the user — all with the support of artificial intelligence.
This aesthetic function shows that Infinix is concerned not only with technical innovation, but also with the visual and interactive experience of its products.
Although they are still in the conceptual phase, both the phone and the solar cover indicate real paths for the future of energy autonomy in mobile devices.
There is still no forecast for a commercial launch, but the presentation at MWC 2025 reinforces the industry's interest in sustainable and functional solutions.
With an approach that combines energy efficiency, personalization and innovation, Infinix positions itself as a brand that seeks to redefine the role of smartphones in everyday life, reducing dependence on chargers and promoting the use of renewable energy.
