Hello please I want to download some app they said I should update my iOS 14 but I don’t know to do it

Did you so to settings - general - software updates and enable updates? You can enable the option to either download only, then do install or enable automatic updates. Myself I prefer to do the manual install option.

The iPhone 6s Plus can update to the latest version of iOS , iOS 15.6.1. iOS 14 is not available anymore

The iPhone 6 without the s cannot update further then iOS 12.5.5. due to hardware limitations

When facing trouble updating wirelessly, please update 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.

Follow the instructions in the Related Article above. If you encounter a specific issue, describe it in this thread.

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