Yes, the Apple 11 can be fully charged the first time,12 hours do not need to be fully charged, can be charged at any time. The Apple 11 should have a complete charge and discharge process once a week, that is, from red charge to full charge.
Although the iPhone has overcharge protection, it is recommended to unplug the phone when it is fully charged. Long charging periods, such as overnight charging, are not recommended. When the battery is low, it should be charged in time.