i cant update my ios

Follow the instructions under "Remove and download the update again" here - If your iPhone or iPad won't update - Apple Support

If it still doesn't work, you'd better contact Apple Support with one of the options below-

• Call Apple at 1-800-MY-APPLE or Apple Support at 1-800-APLCARE
• Chat using the Messages app on your iPhone or Mac. Make sure to use Safari to open the link.
• Contact - Official Apple Support
• Find Locations - Apple

First, try removing the update and redownloading it, using the instructions provided in the link.

If you have a computer, use that to update iPhone.

• Update your device using a Mac with macOS Catalina or later
• Update your device using a Mac with macOS Mojave or earlier, or a Windows PC

Have you tried updating via a pc or Mac instead?

Update your iPhone using a Mac with macOS Catalina or higher

On a Mac with macOS Catalina or higher, you will use the finder in order to upgrade your iPhone. Make sure to Back up your device before starting the upgrade process.

On a Mac with macOS Catalina or later, you will follow the following steps:

1. Open a finder window
2. Connect your device to your Mac via a lighting to usb A or a lightning to usb c cable
3. Select your device in the left sidebar of the finder window
4. click general, then click check for update
5. Click download and update.
6. If asked, enter your iPhone passcode

Update your iPhone via a Mac running macOS Mojave or earlier, or on a Windows PC

On macOS Mojave or earlier, or on a windows machine, we won't use the Finder to upgrade your iOS

Instead, we will use iTunes. Make sure to Back up your device before doing any update or upgrade to your phone.

1. Open iTunes
2. connect your device to the computer with an lightning to usb a or a lightning to usb c cable
3. Click device button in the iTunes toolbar
4. In the summary tab, click check for update
5. Click download and update, follow The on screen instructions
6. If asked, enter your iPhone passcode.

Try a force restart. Press and very quickly release the volume up button, press and very quickly release the volume down button, then press and hold the side button for about twenty seconds. When the Apple logo appears, release the button. The timing is a little tricky, so try it a few times!

Force restart iPhone - Apple Support

Here's an Apple video. Watch from 0:38 to 1:00.

Just keep clicking. If it doesn’t work, force restart your iPhone:

Click and quickly release the volume up button

Click and quickly release the volume down button

Hold down the power button and DO NOT slide the slider.

Keep holding it down until it turns off.

If you see anything counting down, stop immediately.

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See here for location-specific support options - Choose your country or region - Official Apple Support

Contact Apple Support.

Settings > General > Software Update

What happens when you try to update?

What message appears?

Go to General > Software Update.

If you don’t see it:

Make sure you’re connected to Wi-Fi.

Make sure you don’t have any VPNs, Work Profiles, or Beta Profiles