iPhone 12 not able to connect to Mac Studio and MacBook Pro

If you're experiencing difficulty connecting your iPhone to your Mac, there are a few steps you can take to troubleshoot the issue:

1. Check the USB cable and ports: Ensure that you're using a certified Lightning to USB cable and try connecting it to different USB ports on your Mac. Also, check for any physical damage or debris in the ports that may be preventing a proper connection. Use genuine cable --> Identify counterfeit or uncertified Lightning connector accessories ...
2. Disconnect all other USB devices from your computer, except for your keyboard and mouse. --> Resolve USB-related alerts in iTunes/Finder - Apple Support
3. Restart your iPhone and Mac: Sometimes, restarting your devices can resolve temporary connection issues. Restart both your iPhone and your Mac, and then try connecting them again.
   1. Restart the device. That's it.
   2. Still not solved --> Force restart iPhone - Apple Support
4. Search for accessories that have completed MFi certification. Once an accessory has completed MFi certification requirements and is reported to Apple as sold/distributed, it will be searchable in our public database of authorized Lightning, headset, charging, iAP-enabled, and Find My network-enabled accessories.
   1. Learn how to identify counterfeit or uncertified Lightning-based accessories.
5. Update your software: Make sure that both your iPhone and Mac are running the latest software versions. On your iPhone, go to Settings > General > Software Update, and on your Mac, go to the Apple menu > System Preferences > Software Update.
   1. Update Over-the-Air (OTA) —> Update your iPhone or iPad - Apple Support (IN)
   2. Update using iTunes/Finder —> Update your iPhone, iPad, or iPod touch - Apple Support (IN)
6. Trust the computer: When connecting your iPhone to your Mac for the first time, you may need to trust the computer on your iPhone. Unlock your iPhone and check for any prompts asking you to trust the connected computer. Confirm the trust request on your iPhone. About the “Trust This Computer” alert message on your ...
7. Try a different port, cable, or computer. The issue could be related to your computer, its USB port, or the USB cable connecting it to your device. If possible, try a different computer, USB port, or USB cable. Also, check for any debris in the charging port on the bottom of your iPhone or iPad. --> If your computer doesn't recognize your iPhone, iPad, or iPod ...
8. Reset your iPhone's settings: If the issue persists, you can try resetting your iPhone's settings. Go to Settings > General > Transfer & Reset > Reset > Reset All Settings. This will not erase your data but will reset your settings to their default values. After the reset, attempt to connect your iPhone to your Mac again. Return iPhone settings to their defaults - Apple Support (IN)
9. Update iTunes or Finder (macOS Catalina or later): If you're using a Mac running macOS Mojave or earlier, make sure you have the latest version of iTunes installed. If you're using macOS Catalina or later, iTunes has been replaced with Finder for device management. Ensure that you have the latest macOS updates installed, which should include the latest version of Finder. Update macOS on Mac
10. Check for conflicting software: Sometimes, third-party security software or firewalls can interfere with the connection between your iPhone and Mac. Temporarily disable any security software or firewalls and see if that resolves the issue.

If you are experiencing an issue not listed here, contact support as they can provide specific troubleshooting steps based on your situation.

"iPhone 12 not able to connect to Mac Studio and MacBook Pro: I have an iPhone 12 Pro. I tis updated with to the latest iOS. When connected to my Mac studio, it does not appear in my Finder side Bar. I changed teh cable even restarted the Mac, to no avail. I did the same thing on my MacBook Pro. I still cannot find it on my Finder side bar on my MacBook also. Any advice?"

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iPhone Not Appearing in Finder:

A. Verify the Connection:

First off, see if the iPhone is even seen: 

1. Hold Down: the Option key
2. Click: the Apple menu
3. Choose: System Information or System Report
4. Select: Bluetooth and USB from the list on the left
5. Look For: the iPhone

B. Boot Mac in Safe Mode:

Start your Mac in Safe Mode. In Safe Mode, login items do not open at login, and certain system settings are set aside. Go here: Start Up your Mac in Safe Mode - Apple Support

E. Single-Out this User:

Create and try a new Administrator user, seeing if you do not get this occur while logged into it. If so, then it is an issue with the configuration of the current user. If not, then it is an issue with the entire macOS, in which case you should reinstall the macOS. See below...

D. Reinstall the macOS:

Nothing would be deleted. It's just that items that have become corrupted or deleted, would be replaced or reinstalled back to where they should be. Go Here: How to reinstall macOS from macOS Recovery - Apple Support. Important: Be certain to create a backup of your Mac prior to performing the reinstall. That way, you can have something to restore from the Mac from, should anything go wrong with the reinstall. Once reinstalled, try this once more, seeing if you still get this error.