& 12304;Compatibility& 12305; 1. Only supports Apple iOS devices. Android phones are not supported. 2. If you want to use the "Find My" function, you need to update the Apple iOS system to version 14.5 or higher and the latest system. 3. Sometimes the real-time location of items cannot be seen. People nearby need to use Apple devices to turn on Bluetooth for continuous location nearby. This is normal. The function is similar to Airtag. 4. No need to insert a SIM card, free traffic for life. 5. There is no recording function, only location positioning. Look for a beep when the device plays a sound. 6. Global positioning support. Only requires iPhone iOS 14.5 and above. 7.Replacement battery model: CR2032 & 12304;Packing List& 12305;1pcs locator1pcs rope1pcs instruction manual Notice-Not available on Android mobile devices.