Check if your devices support i OS 11, because Apple would leave some old devices behind when newest i OS generation coming. Press and hold both the power button and the Home buttons and continue holding until the Apple logo appears. 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. View the details of each step to fix verifying update issue, please refer to this guide: How to Fix i Phone 8/X/7/6s/6/5s/4s Stuck on Verifying Update This i OS 11 issue happens more commonly on those devices with 16G, or 32G storage. Use an i Pad Charger will make it faster to charge i Phone. Many users have emailed us asking for help with ringtonw not working on i Phone 8/X, so we gather a few possible solutions: Method 1. In the past, its taken as many as three hard resets. Under this i Message not working problem, i Message cannot be delivered, i Message stuck on activating screen, an error occurred during i Message activation, message app keeps crashing, or i Phone/i Pad not receiving or sending messages. For detailed information, please refer to how to recover lost data due to upgrading Siri is blending in our daily lives. To get more suggestions on solving Siri problems, please refer to this guide Among many i OS users, Safari may be their favorite web browser, including me personally. If your device sound suddenly cuts out while you’re on the home screen or while you’re using an application, don’t panic. If you are looking for ways to solve issues related to text sound, you can refer to this post for suggestions: How to Fix No Text Sound on i Phone The other i OS 11 sound related problem is about i Phone ringtone. You can take the following tips to get them solved. If you have a screen protector, you can remove it to have a try. If it doesn’t work the first time, try it again until it works. We also prepare you a detailed guide: How to Fix Touch Screen Not Working After i OS 11/i OS 10 Update i OS 11 updating sometimes will also lead to some apps breaking down, and i Message is one of them. However if unfortunately you have not backed up your devices, there is no need to worry about it, because we can also get back disappeared data with a mobile data recovery software - Phone Rescue for i OS. If you have Bluetooth on, try turning it off and then trying Siri again.
Make sure it’s not a router/Internet Service Provider (ISP) problem. If you’re pretty sure it’s not a router issue, you’ll go to Settings Just like Wi-Fi problems, i OS 11 updating may also put in such situations, Bluetooth won't connect to i Phone/Car, Bluetooth connection drops frequently, Bluetooth always on, or Bluetooth won't turn on on i Phone or i Pad, etc. If there are too many videos and photos, they will also cause i Message slowing down. Go to Settings Besides App Store is down, we often face with troubles of app not downloading and updating. Besides, it also working for Chrome, Firefox, Opera. If you want to learn more details, you can check: How to Fix Can't Activate i Phone i Pad i Pod touch After upgrading to i OS 11, you maybe also encounter i Devices randomly restarting. According to our data collection from many mainstream and non-mainstream forums, and our user’s emails and feedback, many problems and issues occur during i OS 11.4/11.3/11.2/11.1/11 updating, and using it afterwards. 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. 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.