"Apple mobile phone user guide: Take Apple xr as an example, open the mobile phone's Shortcuts, click Automation, click Create Personal Automation, find the NFC option, start, Scan, (Note: Align the black wafer on the surface of the ring with the NFC position near the camera on the back of your phone so that it can be sensed!This sensing distance is only 1-2 mm)after. It is to develop various functions yourself! Use your wisdom a little, you will find our products fun, convenient and durable! (Warm reminder: NFC's automatic settings only support ipone xs and later Apple models, the system needs to be upgraded to iso13 or higher) Instructions for Android phones: Open the phone to download the APP: NFC Tools PRO 4.0, follow the software step by step! (Note: Align the black wafer on the surface of the ring with the NFC position near the camera on the back of your phone so that it can be sensed! This sensing distance is only 1-2 mm.) If you have any questions, please write to us at any time, we will do our best to serve customers!"