Comprehensive Guide of iOS 15 Update Issues 
Have you meet iOS 15 update issues? Users could get some help from this tutorial to get rid of iOS 15 update problems.
Common iOS 15 update issues
On Sep. 20, 2021, a new Operating System, iOS 15 was released to the public. So many new stunning features are ready for all iPhone users, like Focus, Live Text, Dictation, etc. Seas of users rush to upgrade their OS.
However, tons of feedback on iOS 15 update issues are reported on forums here and there. It seems that this update cannot be free from bugs and problems. Here some common problems are listed, and the troubleshooting methods are offered, too.
Problem 1. Touch screen not working after iOS 15 update
- Apple has announced the compatibility of iOS 15. It can be compatible with devices from iPhone 13 to SE. But if the model of your device is a bit old, it is very likely for your device to be slow after upgrading.
- Before deleting anything, please remember to make a backup of your data.
Solution 1. Try to clean your screen first. Perhaps some dust is disturbing or bothering. Always keep your screen from oil, dusty and humid environments.
Solution 2. Reboot your device. If your iPhone still reacts to slide to power off/Assistive Touch, press and hold the Assistive Touch > tap "Restart", or press the on/off buttons > slide to power off, then turn your device on by pressing and holding the on/off button.
If not, you may need a force restart.
For iPhone 8/later. Press and quickly release the Volume Up button, then press and fast release the Volume Down button, and then hold the On/Off button until the Apple logo shows up.
For iPhone 7/7 Plus. Press and hold both the On/Off button and the Volume Down button at the same time until the Apple logo comes out.
For iPhone 6s/earlier. Press and hold both the Home button and the On/Off button, do not let go until you see the Apple logo.
Solution 3. Try to free up some space on your device. Your device can be sluggish if your storage is about to be full. Back up your current data using iTunes or backup software, then delete some photos, apps, or files you don’t need, or clean caches in your apps.
Solution 4. Restore your device, and upgrade again. Back up your data, restore your device using iTunes and then update your device to iOS 15 again.
Thus, you may solve the iPhone touch screen not working after iOS 15 update issue.
Problem 2. Apps not working after iOS 15 update
Some other problems are reported as well. It seems that third-party apps failed in keeping pace with iOS 15. Some apps may not be compatible with iOS 15, then some of them may get crash.
Solution 1. The first course of action would be to restart your app. Try to cease it and then start it, see if it is fixed.
Solution 2. Check if the latest version of the app is released in APP Store. If not, you may have to wait for a newer version to fix the errors or problems.
Problem 3. Battery Draining after iOS 15 update
A bunch of feedback about battery draining fast can be found in forums. The consumption speed seems to be faster than the previous generation of iOS.
Solution 1. Activate the Low Power Mode. Go to “Settings” > “Battery” > “Low Battery Mode” > “Battery Health” > “Optimized Battery Charging”. This can help optimize the battery performance and prolong its lifespan of the battery.
Solution 2. Deactivate the Background App Refresh. Go to “Settings” > “General” > turn off “Background App Refresh”. If the apps are get refreshed in the background, the power drain speed would be faster.
Problem 4. iPhone storage full error after iOS 15 update
Plenty of users shared their iPhone Storage Almost Full error after the iOS 15 update. They keep receiving this notice even if their iPhone storage is still ample.
Can’t get rid of a notification on my iPhone which is saying “iPhone storage almost full” after updating to iOS 15. I have 50GB free?
- Question from Twitter
Hey, upgraded to ios15 and getting storage almost full notification when there is more than 10GB space available? A bug I’d presume? Is there a way to fix this?
- Question from Twitter
In fact, it is not an issue that can be fixed right now. There probably is nothing that users can do to address it for themselves. It can be a bug of iOS 15. So, users may have to wait for a newer software version released from Apple to solve it.
Problem 5. Data loss after iOS 15 update
A much upsetting thing for users who has updated to iOS 15 is data loss. Seas of users are so anxious to upgrade, without creating any backups of their data. Then data loss happens.
I need you to help me with my situation, I have a big problem, I did the new update iOS 15 my iPhone is 8 I was having 6k pictures and when I finished the update I find out that they deleted 3k of them and I want you please help me return it.
- Question from Roaa228 (Apple Community)
Relax, you still have something to do. Here you could utilize an iPhone data recovery tool to get back your lost data.
- Restore notes, photos, videos, bookmarks, contacts, as well as WeChat chat histories, etc., in 3 steps.
- Available for the latest iPhone 14/13/12/11/X, etc., and iPad & iPod Touch.
- Compatible with iOS 10.0 and above & the latest 16/15/14, etc.
- Scan, preview, and recover your data in 3 steps.
- It is recommended to use a lightning cable to ensure a good connection.
- Choose to “Trust” when the notice “Trust This Computer?” came out.
Step 1. Install MyRecover for iOS, then connect your iPhone properly.
Step 2. Click “Scan Now”.
Step 3. After that, select the data you need, then click “Recover”.
Then you can enjoy your iOS 15 update without data loss.
Bonus tips: Back up your data before upgrading
In this post, we have gone through some most frequent iOS 15 update issues and the troubleshooting methods have been given in detail, as well. When you need your data but can't find it, it's easy to see the value of backups.
Backing up your data is a wise practice for all users since it may help you avoid data loss at any moment. FoneTool is a professional iPhone data backup app with wonderful capabilities that can help users keep their data.