Iphone will restart when update completes什麼意思

"iPhone will restart when update completes" is a message or notification that you might see when installing a software update on your iPhone. It means that once the update process is finished, your iPhone will automatically restart to apply the changes and complete the update.

During the update process, your iPhone will go through several steps to download the update file, prepare the installation, and then install the new software. When the installation is complete, the device needs to restart to boot up with the new operating system. The restart is a normal part of the update procedure and is required for the update to take effect.

It's important to note that during the restart, your iPhone will turn off and then turn back on. This process may take a few minutes, so it's best to ensure that your iPhone has a good amount of battery life and is not interrupting any critical tasks before proceeding with the update. Additionally, it's a good idea to back up your iPhone before starting the update process to ensure that your data is safe in case anything goes wrong.