This USB to Micro USB Host OTG cable is designed and constructed for maximum durability to ensure dependable, long-lasting connections. This adapter will only work with devices that support USB OTG. Please consult your documentation and/or your service provider to ensure that your device does support USB OTG functionality. The device supports charging of another mobile as well. Just plug in the cable to the USB host and use the charge from one phone to charge a second phone.