For the Iphone Users, please download the App from app store: i-easy drive Interface Type: USB 2.0 Product Type: Multifunctional Color: Silver, Gold, Black, Blue, Red Supported devices: for iPhone5/5s/5C/6/6 plus/6S/6splus, iPad4/5/mini and iPod touch 5 Operating system: IOS 8.1 /IOS9.3 Windows XP / Windows 7 / EASY TO USE:Plug the stick to your phone and follow the screens to download and install the APP. Tips: Flash memory vendors are using decimal arithmetic:1MB = 1000KB,1G = 1000MB calculated, the operating system using binary arithmetic:1MB = 1024KB,1GB = 1024MB; so there are some differences between display capacity and nominal capacity of flash memory product 8G is about 7.5G, 16GB is 14.5GB, 32GB: 29.7GB, 64GB is 59.5GB How to use: My phone installed a lot of Apps and there are many photos inside , phone memory is not enough ,but after use this 3in1 usb flashd drive , All problems solved! 1. Download app from the App store then connect with the phone. 2. we can moved most of old photos to the Device, my phone have more space to store new photos (It can be directly connected to the phone and move the photo in the phone to the device ). 2. we can download the MP3 music or MP4 movie to the usb flash drive from PC. then When you travel work, you can open the music or movie and Word/Excel/Power point /PDF from usb flash drive.