You can also just use your iPhone's torch and install the heating app. Drains your battery quickly though. https://www.reddit.com/r/iOSProgramming/comments/7te

You can also just use your iPhone's torch and install the heating app. Drains your battery quickly though. https://www.reddit.com/r/iOSProgramming/comments/7tew81/hand_warmer_app_extremely_useful_in_chilly/ https://www.reddit.com/r/iOSProgramming/comments/7tew81/hand...