After updating my SM-A205F (GALAXY A20) to andoid 10 (one ui 2.0) im experience superb battery life!but some days later im recieved call from my friend but my phone is get stuck!after restart device my battery is quick draining!so i factory reset my device but that doesn't help me!so i found this amazing solution! open dialer and put this code *#0228# > tap quick start > tap ok > Power off your device > charge your device to 100%.(dont use your device without full charging after using code).i hope this will help your all battery draining headache!
Dear Samsung Member,
Greetings from Samsung Customer Support!
To resolve your device battery drain issue please visit this link: https://www.samsung.com/in/support/mobile-devices/samsung-mobile-battery-drain-issue/
For further assistance, register your concern in Samsung Members Application (Open Samsung Members Application > Get help > Send Feedback > Error report/Ask questions).
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Samsung Customer Support