Is iPhone 5 is eligible to iOS 11 ?

See the chart below to determine whether you can upgrade your device and to what you can upgrade. If you do not have a Software Update option present on your iDevice, then you are trying to upgrade to iOS 5 or higher. You will have to connect your device to your computer and open iTunes to update.

iPhone, iPod Touch, and iPad iOS Compatibility Chart

Device iOS Version

iPhone 1 iOS 3.1.3

iPhone 3G iOS 4.2.1

iPhone 3GS iOS 6.1.x

iPhone 4 iOS 7.1.x

iPhone 4S iOS 9.x.x

iPhone 5 iOS 10.x.x

iPhone 5c iOS 10.x.x

iPhone 5s iOS 11.x.x

iPhone 5se iOS 11.x.x

iPhone 6 iOS 11.x.x

iPhone 6 Plus iOS 11.x.x

iPhone 7 iOS 11.x.x

iPhone 7 Plus iOS 11.x.x

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iPod Touch 1 iOS 3.1.3

iPod Touch 2 iOS 4.2.1

iPod Touch 3 iOS 5.1.1

iPod Touch 4 iOS 6.1.x

Pod Touch 5 iOS 9.x.x

iPod Touch 6 iOS 11.x.x

-------------------------------------------------------

iPad 1 iOS 5.1.1

iPad 2 iOS 9.x.x

iPad 3 iOS 9.x.x

iPad 4 iOS 10.x.x

iPad 5 iOS 11.x.x

iPad Pro 12.9” iOS 11.x.x

iPadPro 9.7” iOS 11.x.x

iPad Mini & Mini Retina iOS 11.x.x

iPad mini 2 iOS 11.x.x

iPad mini 3 iOS 11.x.x

iPad mini 4 iOS 11.x.x

iPad Air iOS 11.x.x

iPad Air 2 iOS 11.x.x

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Select the method most appropriate for your situation.

Upgrading iOS

1. How to update your iPhone, iPad, or iPod Touch

2. iPhone Support

3. iPod Touch Support

4. iPad Support

a. Updating Your iOS from iOS 5

Tap Settings > General > Software Update

If an update is available there will be an active Update button. If you are current,

then you will see a gray screen with a message saying your are up to date.

b. If you are still using iOS 4— Updating your device to iOS 5 or later.

c. Resolving update problems

1. iOS - Unable to update or restore

2. iOS- Resolving update and restore alert messages

Sadly the iPhone 5 or 5C isn't eligible for the iOS 11 update, or any future updates. The iPhone 5S is the oldest phone that will receive the update without major issues.

This is because the iPhone 5C, 5 and below are 32-bit devices, and iOS 11 now only supports 64-bit ones. This means any old 32-bit apps on your phone will not open and must be updated by the developer.

I recommend you stick with your iPhone 5 for now however, and the prices of the 5S and 6 will go down by the end of this year.

The iPhone 5s is, but not the 5 or 5c.

(153624)

You need an iOS device with a 64-bit cpu for iOS 11. The iPhone 5 uses a 32-bit processor, so it cannot run iOS 11.