iPhone 6 keeps refreshing and disconnecting when plugged after update to iOS 11.1.2
iPhone 6 keeps refreshing and disconnecting when plugged after update to iOS 11.1.2. It keeps disconnecting in about every 1 minute. I have owned the phone since new for 2 years and this is the first time it has happened. I checked and cleaned the lightning connector with no difference. Are there any suggestions how to fix this while keeping all personal data? Thank you
iPhone 6, iOS 11.1.2, version 15B202