Why does ios 16.4 for me takes 5 hours to install

The time it takes to install an update is determined almost entirely by your internet connection speed. The time to update has 3 primary components: Download time, verification time, and installation time. Of these the first is by far the largest contributor. The other two typically take about 15 minutes. On my 1 GB internet connection the whole update takes about 20 minutes. There are other factors that can slow it down. If any of the following are not met or are only intermittently met, for example:

• 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) unless it is an iPhone that supports cellular 5G (12, 13, 14 or SE 3rd edition) and has a 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 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

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

Without knowing what message is being displayed, it’s impossible to answer your question. But you may find the answer below. Note that a key factor in how long it takes is the speed of your internet connection.

Note that an update over the air from the phone will pause if all of these requirements are not met:

• 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

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

Well, you asked us to guess everything about your particular situation.

See this article.

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

What stage is taking the time? Downloading? Verifying? Preparing? Updating? The phone will display each of these steps as it processes the update.

Well, the status bar would be very helpful in diagnosing your unusual condition. When I update it takes 15-30 minutes every time. I have gigabit fiber, but that wouldn’t make that big a difference. Even with 100mbps it shouldn’t take more than 15 minutes to download.

It’s too bad you edited the screenshot above - omitting the top row, for example.

I never said “fake”.

I said “edited” - meaning “cropped”.

I disagree.

Good luck.

Mine is also doing the same. 3hours to install. Is something wrong? ours to install.

So 2 hours to download the update over 1gig fiber internet? Even after meeting the requirements.