“Update Requested” for 2 days

First Force restarttje phone

Force restart iPhone – Apple Support (UK)

Then Check

• you are on a good Wi-Fi,

• on charge with more than 50% charged,

• no VPN installed

• low power mode turned off.

• Fully working cellular network connection via your SIM.

• Check Settings, General to make sure you have no Beta profile installed.

Resources:-

Update iphone

Update your iPhone, iPad, or iPod touch - Apple Support

Learn how to update your iPhone via recent Macs here:-->

Update your iPhone, iPad or iPod touch with the Finder – Apple Support (UK)

or older Macs and PC here:-->

Update your iPhone, iPad or iPod touch with iTunes – Apple Support (UK)

Iphone will not update

If your iPhone, iPad, or iPod touch won't update - Apple Support

To update over the air from the phone all of these requirements must be met:

• You need at least 6 GB of free storage
• You must be connected to a Wi-Fi network (and not a personal hotspot) unless it is an iPhone 12 or 13 series with an active 5G network connection
• 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
• You cannot still have a beta version installed on the phone

If you can't meet all of them you can still update using your computer.