Samsung Galaxy S21 series Exynos variants plagued with battery life issues since the rollout of February security patch

Users says the phone's battery drains at an accelerated rate on cellular connectivity and falls within normal parameters when switched to flight mode.

from http://www.firstpost.com/tech/news-analysis/samsung-galaxy-s21-series-exynos-variants-plagued-with-battery-life-issues-since-the-rollout-of-february-security-patch-9297211.html