I cannot update my iPhone 6 Plus

If your device won't update, make sure you are following all the conditions for the method you are trying to use:

Update your iPhone or iPad - Apple Support - wirelessly*

Update iOS on iPhone - Apple Support - with a computer

Your iPhone is already running iOS 12 which is the highest that can be installed. You can try to update it to its current maximum of 12.5.7 if it isn't already running it.

If your Apple mobile device won't update, read this support article for a list of possible reasons --> If your iPhone or iPad won't update - Apple Support

Another, less common reason for not being able to update is if you were using a beta version of software. Refer to How to uninstall iOS or iPadOS beta software - Apple Support

If you need more space for an iOS update read this support article --> If you need more space for an update on your iPhone, iPad, or iPod touch - Apple Support

* From ASC contributor Lawrence Finch at How can I upgrade my iPhone 6s iOS13 to i… - Apple Community here's a checklist of criteria that all need to be met in order to update wirelessly:

• You need at least 10 GB of free storage for iOS 16 or 6 GB for iOS 15 or lower; more is better

• You must be connected to a Wi-Fi network (and not a personal hotspot)

• The phone must be charged to at least 50%, and preferably plugged in so it stays above 50% during the update

• The phone must not be in Low Power Mode

• The phone must not be connected through VPN, and it may be necessary to delete any VPN apps and VPN profiles

• The phone cannot be in Airplane mode and must have a cellular data connection

• You cannot still have a beta version installed on the phone

• You cannot have a previous version that was downloaded, but not installed - go to Settings/General/iPhone Storage to look; if you find an iOS installer, delete it

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