White Apple when iPhone 6s upgrades IOS 13

My daughter-in-law's iPhone 6s has only been upgraded today. After the upgrade, it is automatically turned on. There is only the Apple logo in the middle of the screen. This status has lasted more than half an hour.

Try to use it by pressing the power+home button at the same time. The screen lights up automatically after it is dark for a while, but it still stops in the white apple state when it is turned on. In addition, there is another problem. The screen will be black every twenty or thirty seconds.

In desperation, I contacted Apple after-sales on Apple's official website, and soon called. After asking about the situation, after a period of waiting, let's connect the iPhone to the computer, open iTunes, and press and hold the power button+home button for more than 15 seconds until a data line and mac image interface appears. iTunes will prompt "iPhone has problems, and needs to update or reply."

Click Update to download IOS for update. After waiting for more than ten minutes, the iPhone entered the upgrade interface, and the progress bar was also slowly moving, but the same situation still occurred after the upgrade.

I can't help it. I have to repeat the steps of pressing and holding at the same time to try to restore, but the restoration will erase the data, and the iPhone has not been backed up for a long time.

After two slow updates to the interface, the machine finally started up successfully, and the data inside was also lost.