If your Magic Mouse 2 isn't turning on or being detected by your device, here are some troubleshooting steps to try:
1. Check the Power Switch
2. Restart Bluetooth
3. Check Bluetooth Connection
4. Try Pairing Again
5. Check for Interference
6. Test with Another Device
Ensure your Mac’s software is up to date by checking in System Preferences > Software Update.
Sometimes a software update might resolve Bluetooth connectivity issues.
If none of these steps work, it could be an issue with the mouse's hardware. In that case, you may need to contact Apple Support for a replacement or repair.