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!
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Let me provide you some troubleshooting steps so you can diagnose your problem yourself instead of visiting to the service center. Step (1):Perform Battery Optimisation. Settings > Select Device Maintenance/Device Care > Optimize > Optimize all options like Battery, Storage and Memory. Step(2):Turn off Bluetooth, Wi-Fi, mobile hotspot, NFC, etc a). Swipe down on the home screen to open the notification panel. b). Tap on Bluetooth, Location/GPS, Wi-Fi, Mobile hotspot, NFC, etc. to turn off. Step (3):Kindly check whether the mobile network fluctuates frequently or network signal is low in your area. In both cases, the battery will drain considerably fast. Step(4):Reduce display brightness level. a). Swipe down on the home screen to open the notification panel. b). Turn on the Auto-brightness option if available. Step(5):Adjust screen timeout settings. Go to Settings > Display > Screen timeout > minimum screen timeout. Step(6):Update apps. Kindly check which application is or interface is using more battery from device care. And try to update the app or avoid using that app. Step (7):Close background running apps. Tap on recent key and close the background running application. Step(8):Turn off auto-sync of e-mails, app data, etc. a). Swipe down on the home screen to open the notification panel. b). Turn off the auto-sync option. Step(9):Check device in safe mode: Power off the device > Press and hold the Power key for one or two seconds to turn on the device > When the Samsung logo appears, press and hold the Volume down key. Exit safe mode: Restart the device. Step(10): Try your device in safe mode. As you were facing battery drainage issue in your device, I have provided you some basic trouble shooting steps and your concern has been resolved. "If the problem is solved click the three dots & click solution".
