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Battery drainage is fast and over heating after recent update

Star II
Please tell us some basic information before asking for help:
Model Name:X01BDA
Firmware Version:PKQ1.WW_Phone-16.2017.2004.075-20200407
Rooted or not:not
Frequency of Occurrence: after recent update
APP Name & APP Version (If your issue relates to the app):No
In addition to information above, please also provide as much details as you can, e.g., using scenario, what troubleshooting you've already done, screenshot, etc.


Zen Master III
After a new update, you might feel the device is warm. You can wait for couple of days’ post update. Also, to be noted that phones heat up under intensive usage such as gaming, prolong use of camera or under extreme temperature.
Please follow below steps may improve battery backup:
1. Enable “Power saver” (Settings > Power management)
2. Close apps that are not used (Bluetooth, WiFi, GPS, etc.)
3. Adjust sleep time and brightness (Settings > Display)
4. Boost memory when you see memory consumes is high with no app running,
5. check for background running applications, stop/disable unwanted apps, you can manage apps from auto-start manager.