Once a year, Apple announces a completely new version of iOS, the operating system that runs on all iPhones. These full version updates bring new features, UI improvements, and important security fixes – and best of all, they’re free.
The latest version is iOS 15, which you can download and install today (September 20, 2021). In this article, we explain how to install iOS 15 on an iPhone and help guide you through any problems you may encounter.
What do i need:
You’ll be installing the iOS 15 update from Apple’s servers, so you’ll need a reliable internet connection. Besides, you only need an iPhone that is compatible with iOS 15 and access to AC power (you should plug in your iPhone during the update).
Does my iPhone support iOS 15?
Before asking the upgrade to IOS 15 read about the compatibility of iOS 15 – that’s important. Apple obsolete the older models are not certified as powerful enough to run the latest software.
List of IOS 15 compatible devices:
After the release of IOS 15 everyone is asking which device is compatible with iOS 15. Apple announces the list which iPhone of iOS 15 compatible devices.
- iPhone 6s
- iPhone 7
- iPhone 8
- iPhone X
- iPhone 11
- iPhone 12
- iPhone 13
- iPhone SE
Preparing iPhone for iOS 15
A few things to note before downloading the update:
- Back up your iPhone in case something goes wrong.
- Free up some space on your iPhone. Updating iOS will likely take up a lot of space to install – and it’s still worth making some space.
- Connect to a power source.
- Make sure you are downloading over Wi-Fi and not 3G or 4G, otherwise you may run out of data. Also, make sure it’s a secure network. (For example, we don’t recommend installing iOS updates over a hotel Wi-Fi network).
All right. We are ready to install iOS 15!
How to install iOS 15
Open the Settings app: tap the gray gear app icon if you see it, or go to Search (swipe down from any home screen) and type Settings.
- Go to General.
- Software Update.
- Wait for iOS to check for new updates.
If iOS 15 is ready for download – and remember that deployment is often a bit lagged when we expect it, and may appear later in some territories than others. If you don’t have one of the newer versions of iOS 14 (such as iOS 14.8) installed, you can see iOS 14.8 at the top of the screen and “Also available: upgrade to iOS 15” at the bottom.
If there is no new version of iOS to download, you’ll see “Your software is up to date“.
You can read about the update by tapping Learn more or jump in and tap Download and Install at the bottom of the screen.
Enter your access code and accept the terms if and when required. Your device downloads the update in the background, and you can do other things while you are there. You will receive a notification on your iPhone when the download is complete.
>> Go back to Settings and tap Install Now and wait for the process to complete.
We’ll cover the update process in more detail in a separate article: How to update iOS on your iPhone.
Why is my iPhone not installing iOS 15?
Here are some common issues you may encounter when updating your iPhone, and our fix suggestions:
Why isn’t iOS 15 available yet?
As mentioned above, iOS deployments are not predictable. Give it an hour or two and try again later.
Installing iOS 15 takes a long time
This is common, especially if you install the update on the day it is released, when Apple’s servers are always very busy. Take the time estimates given in the interface with a grain of salt.
iOS 15 doesn’t install at all
Check that your iPhone is compatible, that you are using Wi-Fi and not cellular, and that your iPhone is connected to power.
If the problem persists, read What to do if you cannot update your iPhone.
Other iOS 15 issues
Usually, when a new version of iOS arrives on iPhones, there are reports of battery drain issues, Wi-Fi and Bluetooth connection issues, app issues, and other issues. We’ve summarized some of the issues reported by users since iOS 15 was installed below – and you can expect them to be resolved in future iPhone OS updates.
1. Battery life problems
A marked reduction in battery life is often reported after a major iOS update, but this is not necessarily due to a bug. If your battery life is shorter, it’s probably because after updating, many processes will be running in the background while the system re-indexes your data. Luckily, this should be short-lived and your battery life will return to normal soon.
There have been reports that muting your iPhone mutes audio in individual apps – which didn’t work before the update. As one Reddit poster put it: “I could always listen to audio (on Instagram and YouTube) when my phone is on mute, just press the volume button and the audio will be fine.
But after updating to iOS 15, I have to unmute my phone to listen to audio on Instagram (stories, rolls and videos) and YouTube. “
3. Insufficient memory
There have been complaints that iPhones are reporting insufficient memory available when there is a lot of space. As one post on Apple’s support pages put it: “After I update iOS 15 in the settings that tells me my iPhone memory is full but I have 15 GB won’t go away. A hard reset didn’t help.
4. Notifications are not delivered
There have been complaints that notifications from applications such as Outlook and Slack are not being delivered. Some users fixed this by removing and reinstalling the app.
5. ICloud + storage cannot be updated
Some users have reported problems updating iCloud storage levels after updating.
6. iTunes is not working
Some iPhone users who rely on the computer find that iTunes is not working because some files are missing.
F.A.Q – How to Install iOS 15
The release date of IOS 15 in UK is around 6pm BST (September 20, 2021).
In the US, iOS 15 released at 10am PDT and 1am EDT.
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