EX ELECTRONIX EXPRESS 6-Pack Portable Electric MicroUSB Fans for Smartphones and Tablets - Micro USB Set of 6 fans (each individually packaged) Compatible with devices that have a MicroUSB connector with OTG functionality Includes 1 Black, 1 Blue, 1 White, 1 Orange, 1 Lime Green, 1 Hot Pink NOT COMPATIBLE WITH iPhone/iPad, also not compatible with devices that use a USB-C connector If the fan is not operating when plugged in, your phone may need the OTG function enabled. The easiest way to enable this function is to search for the term OTG in your settings and enable it.