Group 1 - The core issue with foldable screens is their vulnerability to low temperatures, which can cause the materials to become brittle and lead to screen damage [1][2] - Foldable screens are made of flexible OLED technology, which includes multiple layers of polymer materials, an organic light-emitting layer, and ultra-thin glass (UTG), all of which have a glass transition temperature that affects their performance in cold conditions [1][2] - The industry is actively working on improving foldable screen technology by focusing on material enhancements and structural optimizations, such as developing low glass transition temperature flexible substrates and more resilient low-temperature UTG [2] Group 2 - In low-temperature environments, foldable screens can experience three main issues: material brittleness, hinge stiffness due to solidified lubricants, and functional disruptions like touch sensitivity loss and battery performance decline [2][3] - Users are advised to take precautions to prevent foldable screens from freezing or cracking, including using insulated phone cases and keeping devices close to their body for warmth [2][3] - It is recommended that users minimize outdoor opening and closing of the device and allow the phone to acclimate to temperature changes before use to avoid potential damage [3]