Apple and Samsung are reportedly preparing slim versions of their upcoming flagship smartphones, with leaked details suggesting that these devices may feature significantly smaller batteries compared to their standard counterparts. Dubbed the iPhone 17 Air and Samsung Galaxy S25 Slim, these models are expected to prioritize sleek, ultra-thin designs, which could necessitate a reduction in battery capacity. According to industry sources, the iPhone 17 Air is likely to debut alongside the rest of the iPhone 17 series in September 2025, while the Galaxy S25 Slim may launch separately from the standard S25 lineup, potentially arriving in May 2025.
The move toward slim designs is not unique to Apple and Samsung, as Chinese smartphone manufacturers are also reportedly working on thinner models that leverage advancements in battery technology. Recent developments in Silicon-Carbon battery technology have allowed Chinese OEMs to incorporate batteries with improved energy density, achieving capacities of around 5,000mAh while maintaining a slim profile. However, for Apple and Samsung, the upcoming slim models are rumored to house batteries in the 3,000mAh to 4,000mAh range, which may pose challenges for battery life.
The devices are also expected to showcase cutting-edge heat dissipation technologies to manage performance within their ultra-thin form factors. According to a Weibo post by reliable tipster Digital Chat Station, the designs of these slim smartphones could measure as little as 5.xmm to 6.xmm in thickness. This would make them some of the thinnest smartphones on the market, but the trade-off in battery capacity could raise questions about their practicality for power users.
As consumer preferences shift toward lightweight and compact devices, these slim models may appeal to users seeking portability and aesthetic appeal. However, their success will likely depend on how well Apple and Samsung can balance performance, battery life, and thermal management in these thinner designs. Fans and critics alike will be watching closely as these devices make their way to market in 2025.
