Equip your phone with an additional USB port.
USB 2.0 adpter cable, OTG, type micro B - A, M/F, 0.2m, USB 2.0 conform, UL, bl, gold
The USB adapter cable allows direct data transfer between two devices without a PC. Thus you also add an USB connection to your smart phone, for example. The connected devices must be OTG (On-The-Go) compatible.