It frequently occurs when you upgrading i OS 11 directly on device.
You can also have a look at this post to find more solutions: How to Fix Notification Not Working on i Phone i Pad This problem has been existing on i OS 9/10, it seems still not being solved on i OS 11, either. If you are looking for methods for this Facebook Manager problem, you can get it working again with these tips: Tip 1.
Although we all know that every newer i OS version will not only bring fresh features to make our life more funny, but also update fixes for bugs occurring in the previous versions.
However, this does not mean i OS 11 is perfect, and bugless.
Normally we can use i Tunes to back up our devices. Swipe to the right while you’re on your device’s home screen. Also, you can choose to reset it or turn it off and try downloading the update again. However there is a possibility that Siri may do not work after i OS 11 upgrading.
The most direct solution is to transfer our data and files from i Phone i Pad i Pod to another i OS device. View these solutions in details, please check the full guide: How to Fix: i Phone i Pad Not Charging or Charging Slowly Some users reported that their i Phone i Pad i Pod were faced with temperature too high warning - “i Phone i Pad i Pod needs to cool down before you can use it.” during updating. The easiest way is wait for a while until the device cools down itself. Go to Settings Sounds to adjust the volume of ringtone. Make sure you have "mute" button set to ring instead of silent. We can just say “Hi, Siri” to find what we would like to eat, where we want to go and how, and more. However Safari would occasionally break down after i OS 11 updating, feedback from many users, with symptoms of Safari not working frequently, crashing all of sudden, page loading slowly, page interface broken, etc.
For more details to work around these software update failed, unable to upgrade, and an error occurred installing i OS 11, refer to this guide post: How to Fix An Error Occurred Installing i OS 11 After downloading i OS 11 updating files, there will be a verifying update step. So if the amount of your photos, videos, music, or others, are extremely large, it would be costing much time. To deactivate a widget, tap the red circle with the white line and tap Remove. Use an Apple-matched USB cable, and don't use any cheap low quality cables. Check and make sure your USB cables is not damaged.
But we also know i Tunes aims at backing up all data. Scroll all the way to bottom of your widgets and select Edit. To enable Low Power Mode on your device head into Settings Solution 1.
So to help all i OS 11 users solve these annoying troubles, we list them one by one, with quick and practical solutions, in the following. Many times we have disallowed App Store to use cellular data. Usually we recommend sincerely our users to try with Phone Clean to clean browsing junk files, cookies, temporary files, downloading files, etc. Check whether the lighting ports of your device are clean. Change another cable, charger and even battery to get your device work in normal. Press and hold both of the "Sleep" and "Home" buttons at the same time for 10 seconds until Apple logo appears on screen. We also write many topic pages about these i Tunes errors, you can directly visit them to look for more possible solutions: 1. So the most frequently used method is to restore your device, and upgrade, with i Tunes. Encounter some problems when updating i Phone i Pad i Pod touch to i OS 11.4/11.3/11.2/11.1/11?