Samsung is teasing a tri-fold Galaxy phone, with a leak from @PandaFlashPro showing its prototype has a silicon-carbon battery. The company wants the tri-fold to be slim, and this new battery tech could help lower the phone’s thickness. The phone is expected to launch in late 2025.
Samsung hinted at a tri-fold phone during January’s Unpacked event, alongside new XR headsets and AR glasses. If this leak is accurate, it would be the first time Samsung uses a silicon-carbon battery. Earlier leaks suggested the S26 series might also get this tech. While the battery capacity is likely similar—about 5,500mAh for the S26 Ultra —this new material could make the phone lighter and thinner. A similar approach is expected for the Galaxy tri-fold.
Traditional Li-ion batteries use graphite anodes, but silicon-carbon batteries use silicon. This allows more power to be stored in less space, making batteries more compact.
The downside? The tri-fold’s battery might stay under 5,000mAh. The focus seems to be on making the phone thinner, not increasing battery life. Chinese brands like Vivo and Xiaomi now offer batteries over 6,500mAh, changing what people expect. Samsung appears to prioritize thinness with the Z Fold 7 and likely with the tri-fold too.
Silicon-carbon’s higher density means Samsung can make the battery smaller while keeping a 4,400mAh capacity. But since this is a prototype leak, the final product might look different. The phone could launch as early as July 2025, alongside the Z Fold 7. It’s uncertain if Samsung will balance thinness, strength, and battery life well.
Huawei already has a tri-fold phone on the market, so Samsung will face tough competition, especially in China.
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