The card reader allows you to read files directly from the memory card. You can copy and paste files from the memory card to your smartphone (tablet, PC, laptop, etc.) or vice versa This product is compatible with iPhone 15 & iOS 17, please feel free to use it For iOS, please use the "File" App to read from the card reader as below. Do not use "Photo" USB-C port for Android phones and tablets (must be with OTG function). Laptops and PCs with USB-C port For systems prior to iOS 9.2-13, you can only use the "Photo" app to read the contents of the card, which must be a photo or video taken by a digital camera and not altered in any way in order to be recognized. Because of this restriction, it is recommended to upgrade your phone to iOS13 or above, otherwise, many cards cannot be recognized or read For iOS 13-16 system, you can use the "file" app to read the contents of the memory card, It does not require that the photos and videos be taken by the digital camera, most of the contents can be read directly. Most of the content can be read directly, provided that the file content can be opened directly by iOS. If you encounter the content of the memory card is the iOS system can not be read directly, you need to download a third-party software to read Compatible with: iOS Windows: Windows 11,10,8,7 MAC OS: 10.6 or above Linux Note: Only one card can be read at a time.