What appears to be a widespread issue is affecting Galaxy S21 Ultra devices and looks like the camera app is the culprit. In some cases, the battery drain can go as far as 21 percent in seven hours and only 15 minutes of screen time. Sadly, the regular battery stats monitor does not detect anything wrong.
https://www.notebookcheck.net/Samsung-s-Galaxy-S21-Ultra-has-battery-drain-issues.545791.0.html
I don't understand why people are still buying Samsung nowadays, the Exynos CPU it's crap...They should learn from Huawei how to make a good phone.
I Have that issue too. its so frustrating to get a high end phone with such issue
I leave my phone in my pocket when am out hanging with friends for 3 hours and so to found my phone losing around 20% for no freaking reason
I hope Samsung fix this or am changing this crab