If your iPhone is not charging after an update, there are several troubleshooting steps you can take to resolve the issue. Here are some common fixes:

1. Check the lightning cable and USB adapter

• Inspect the charging cable: Look for any visible damage or fraying on the cable. Damaged cables can cause connection issues, leading to charging problems. If you find any damage, replace the cable with a new one.

• Check the Power Adapter: Ensure that it is an Apple-certified adapter, as using non-certified adapters can result in charging problems. Try using a different cable and adapter to determine if the issue is with your accessories or your iPhone.

2. Clean the Lightning Port

• **Power off your iPhone. Gently remove any debris from the charging port.  Once the charging port is clean, try charging your iPhone again to see if the issue is resolved.

3. Try another power source

• Charge your iPhone using a different power source, such as a wall adapter or your computer. This can help identify if the issue is with your charger or the iPhone itself.

4. Force-restart your device

• Press and quickly release the Volume Up button.
• Press and quickly release the Volume Down button. Press and hold the side button until you see the Apple logo, then release the button.

5. Update iOS

• Tap Settings > General > Software Update. If an update is available, follow the on-screen instructions to download and install it.

6. Disable optimized battery charging and clean energy charging

• Go to Settings > Battery > Battery Health & Charging. Ensure that both optimized battery charging and clean energy charging are turned off.

7. Reset Your iPhone Settings

• Go to Settings > General > Transfer or Reset iPhone.
• Select Reset. Tap Reset All Settings. You will need to enter your passcode and confirm.

8. Restore Your iPhone From a Backup

• Connect your iPhone to a Mac or PC, and click the Restore button within iTunes or Finder. Follow the on-screen instructions to restore your iPhone from a backup.

Additional Tips

• Check your battery health under Settings > Battery > Battery Health & Charging.

• Use a reliable and certified charging cable and adapter.

• Download and install AnyFix to 1-click fix all system issues after the iOS 17 update, including iPhone/iPad charging issues.

By following these steps, you should be able to resolve the iPhone not charging issue after an update. If none of these solutions work, it may be necessary to contact Apple Support for further assistance.