iPhone 16 Pro Max không thể xác minh khi cập nhật iOS

While updating iOS, if the iPhone displays a message saying that the update “cannot be verified,” the most likely issue is that the device is not connected to the internet—either through Wi-Fi or cellular data.

If you connect to Wifi, doesn't necessarily mean you are connected to the internet. --> Internet not available WiFi and Cellular … - Apple Community

Wi-Fi Assist is on by default. This will automatically switch to Cellular Data if the device is not connected to the internet.

About Wi-Fi Assist - Apple Support

If you connect to Wifi, doesn't necessarily mean you are connected to the internet. --> Internet not available WiFi and Cellular … - Apple Community