error occured in reading and writing to iphone

Connect iPhone to Computer

You haven't mentioned whether you have a PC or Mac

Use your USB lightening cable --> Resolve USB-related alerts in iTunes - Apple Support

If unable to connect --> If iTunes doesn't recognize your iPhone, iPad, or iPod - Apple Support

PC or Mac

• For your Windows PC —> Troubleshooting issues with iTunes for Windows - Apple Community
• For your Mac --> If your computer doesn't recognize your iPhone, iPad, or iPod ...

Use genuine cable --> Identify counterfeit or uncertified Lightning connector accessories ...

See how to --> Sync your iPhone, iPad, or iPod using iTunes on your computer ...

To reset the passcode -> If you forgot the passcode for your iPhone, iPad, or iPod touch, or your ...

Learn how to--> Update your iPhone, iPad, or iPod touch - Apple Support

Here is the process to --> Backup on iTunes.

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