Is it normal for my iPhone 16 Pro to have a 4 hour Screen Time?

All of the screen shot may not have been posted. Which apps are using the most battery power?

Setting a limit of 80% for the battery means that you will have to charge the battery more often and the battery will not go as long as it would if it were charged to 100% using Optimized Battery Charging.

Even if you decide to stay with an 80% limit, the battery is still going to charge to 100% "occasionally". When I tried Charge Limits, I found that "occasionally" was 3-4 times a month. Some users report less and some report more, so there is a real question about often "occasionally" might be.

Frankly, I think Charge Limits are more of a gimmick than anything else, but that might be another discussion.

Bob’s 100% correct. A game can easily drain a battery in 4 hours. So can many of the social media apps.

So, Instagram used 41% of your battery capacity in background. So you weren’t even actively using the app, but it was evidently uploading and downloading data. This use of constant cellular and/or WiFi drained your battery a lot.

This could be an app issue and needs to be monitored over the next 3 to 5 days for any improvements. If you want to be proactive, delete the app and download a fresh copy.

The Home & Lock Screen is generally normal background activity for 5 to 7 days after an update. Many Apple apps may be sending or receiving data from your iCloud account.

You’re welcome and I hope you have a great weekend!

It takes some time....usually about a week or so for Optimized Battery Charging to learn your routine.

It takes at least 5 hours to charge my iPhone 16 Pro Max.