As the countdown to the OnePlus 15’s China debut on October 27 begins, the company is turning up the heat – literally and figuratively. The latest teaser dives deep into the device’s redesigned cooling system, which could be one of the most advanced thermal management setups ever seen in a mainstream smartphone. OnePlus calls it the Glacier Cooling System, now upgraded with a larger vapor chamber crafted from a new type of tearable steel. 
This material doesn’t just sound futuristic – it helps the vapor chamber spread heat faster while keeping the overall structure thinner, freeing up precious internal space for other components.
Beyond the hardware, OnePlus is introducing Glacier Supercritical Aerogel, a cutting-edge insulation layer designed to keep the phone’s outer shell cool even during intense gaming sessions or prolonged charging. The aerogel acts like a thermal barrier, keeping surface temperatures comfortable without throttling performance. This could make a huge difference for gamers and heavy users who demand long, stable sessions without the usual overheating.
The company also confirmed that the OnePlus 15 features improved bypass charging – a system that powers the device directly without heating the battery – along with a custom network optimization chip for better 5G and Wi-Fi performance. A new display synchronization chip further enhances touch response, particularly in fast-paced gaming scenarios. Combined with the Snapdragon 8 Elite Gen 5 SoC, a blazing-fast 165Hz AMOLED display, and a 7,300mAh battery, this phone aims to redefine flagship endurance and responsiveness.
While some users argue that smartphone innovation has slowed, OnePlus seems determined to challenge that idea. Instead of reinventing appearances, the brand is doubling down on performance engineering – an area where small improvements can make a massive real-world impact. If these cooling and connectivity promises hold true, the OnePlus 15 could set a new standard for sustained performance in 2025 flagships.