Compatibility: Perfectly compatible with iPhone 12/13 series Magsafe magnets (no wireless charging), which can be attached at will without a magnetic sheet. The built-in magnetic chip is compatible with almost every mobile phone on the market, including Samsung, Google, Honor, Xiaomi, realme and other brands(flat back shell). Powerful Magnet: The Magnetic phone cooler has a built-in powerful magnet that can be used only by gently sticking on the phone. It is easy to install and will not damage the phone or leave scratches. Wireless Upgrade: Built-in large capacity carbon core lithium battery, can continue to cool the phone without power. It lasts 1-2 hours on a full charge. Fun Game: Turbo mute fan, no noise during the whole process. Let you and your teammates complete a perfect team cooperation. Note: If you use magnetic sheet to assist the cooler, it may affect your phone's use of NFC and wireless charging.