If you have upgraded to iOS 9 you may find your iPhones, iPad, and iPod touch is really slow afterwards. Problems include annoying lag and a delayed response from the user interface.
The lag makes your iPhone, iPad or iPod Touch feel much slower on iOS 9 than it did before the upgrade. It is really annoying and may even make you wish you hadn’t upgraded at all.
You can try some of these tips to speed iOS 9 up.
Speed test results
Here are some speed test results by vloggers iAppleBytes. The videos directly compare the latest iOS 9.0.1 software to iOS 8.4.1 running on an iPhone 4S, 5 and 5S. As you can see they show a noticeable slowing of each device with the new update.
iPhone 4s iOS 9.0.1 vs iOS 8.4.1
iPhone 5 iOS 9.0.1 vs iOS 8.4.1
iPhone 5S iOS 9.0.1 vs iOS 8.4.1
How to resolve this error
After you install iOS 9 it spends a few hours indexing your device ready for use. This background task is a “one-off” and it will slow down your iPhone, iPad or iPod for 6-8 hours. If your device is still slow after this length of time you should try these fixes.
There are a number of things you can try to fix this issue. You should try them in the following order:
If these suggestions don’t work you may want to downgrade back to iOS 8.4.1. However, you will have to setup the device as new, or restore from a backup so you may lose some data.
One of the new features improved as part of iOS 9 is Siri Suggestions. This appears when you do a search and iOS 9 suggests apps, people, locations, and more straight from the search screen. Unfortunately this feature appears to be guilty of causing a big speed reduction and turning it off gives a noticeable boost in speed.
1. Click settings
2. Scroll down and click ‘General’
3. Tap the “Siri Suggestions” switch so it turns off.
4. That’s it!
If iOS 9 still seems slow try the next fix on the next page.