Unistall IOS beta 16

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

• You need at least 6 GB of free storage; more is better
• You must be connected to a Wi-Fi network (and not a personal hotspot) unless it is an iPhone 12 or later 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
• 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

If you can't meet all of them you can still update using your computer. Here are 2 links, choose the one for your computer.

• if you're using a Mac with macOS Catalina or later
•  if you're using a Mac with macOS Mojave or earlier or a Windows PC

Deleting the profile does not delete the version installed on the phone. You need to restore the phone to factory settings to remove the beta version, then set up the phone as new unless you have a backup made before you installed the beta.

You are probably better off just leaving the beta until the next regular release becomes available.

When there is a regular release with the same or later version number as the beta you have you will be able to install it. So, for example, when 16.1 is released you will be able to install it, unless the beta build is the same as the released version. But then it won’t matter, you just got it early.

What is the error that it shows?