iOS 9 It has been launched with the main mission of making the operating system more stable and improving the user experience and therefore, it is compatible with the same devices as iOS 8, that is, iPhone 4S onwards, iPad 2 onwards, iPad Mini 2 onwards and 5th and current generation iPod Touch. Still, the reality is that if your device is one of the oldest, it will not work as well as I had at least imagined and it will probably slow down. To mitigate this lag and make your old iPhone go faster with iOS 9 You just have to make a few small adjustments.
Make your old iPhone with iOS 9 go faster
Despite the efforts of Apple Lossless Audio CODEC (ALAC),, the reality is what it is and it is very difficult, if not impossible, to marry current software with hardware from at least five years ago as is the case with the iPhone 4S and therefore, inevitably, you will have to give up some features with it. in order to make your device go faster with iOS 9. But don't worry, you are not going to miss anything important.
To make your old iPhone or iPad run faster with iOS 9 just make the following adjustments:
Disable transparency and movement
These are two simple changes that will speed up any old device with iOS 9 installed. Reducing the transparency increases the contrast, which increases the speed when switching between screens. To activate «Reduce Transparency», see Settings → General → Accessibility → Increase contrast and activate the first slider, «Reduce transparency».
To reduce motion, go back one step and select "Reduce Motion." On the new screen, activate the only slider you'll find.
Disable background updates
The background update is constantly using the data network or wifi looking for updates in almost all applications. If it is enough for you that these update only when you open them, go to Settings → General → Background update and deactivate the slider. You can also deactivate all the apps that are not important and leave the essential ones. This will also mean a significant battery saving and your iPhone with iOS 9 it will arrive more easily until night.
Turn off Siri Suggestions
Yes, this is one of the biggest news of iOS 9, but it's also slowing down your old iPhone. Siri is the assistant that never sleeps; when its suggestions are turned on, it becomes a data-gathering machine in the background. If you don't need that Crab suggest the best nearby places or remind you of the friends you chat with the most, go to Spotlight Settings and turn off «Siri Suggestions.
SOURCE | iPhoneLife