OnePlus 15T compact flagship smartphone and magnetic cooler details

OnePlus is preparing to unveil a new compact flagship smartphone, the OnePlus 15T, which is expected to debut in China in the near future. While the device hasn't been fully revealed yet, the manufacturer has already showcased an additional accessory: a magnetic cooler designed to keep the smartphone cool during intensive tasks like mobile gaming.

The accessory features a slim and compact body, making it easy to carry around. Compared to the 27W magnetic cooler released alongside the OnePlus 13T, this new model looks more refined and may cover a larger area of the smartphone's back panel. The price of the new cooler hasn't been announced, but for reference, the previous version launched in China at around 199 yuan (about $29).

The OnePlus 15T itself is positioned as a compact flagship. According to company president Li Jie Louis, the smartphone will feature a top-tier Snapdragon 8 Elite Gen 5 processor, a high-refresh-rate display with slim bezels, and an improved cooling system. Despite its compact size, the device will be equipped with a large 7,500 mAh battery.

Additionally, enhanced water resistance and more advanced wireless charging are expected. Preliminary information suggests the official announcement of the OnePlus 15T will take place in China in March 2026, and the magnetic cooler shown may launch alongside the smartphone.