Someone should design a very tiny fan of size of shirt button that can run & cool the smartphone once temperature goes past 45 degrees like during gaming etc.. (gogi.in)
This 1 - ounce fan runs on AAA batteries and lasts up to nine hours, or until someone notices you have a tiny fan inside your shirt. (inc.com)
As they take in this scene, Padilla and Travieso are approached by two tiny fans. (si.com)