Phone draining issues can be caused by a variety of factors, such as apps running in the background, a faulty battery, poor signal strength, or settings that are draining the battery faster than usual. To troubleshoot this issue, try closing any unnecessary apps, turning off features like Bluetooth and location services when not in use, reducing screen brightness, and checking for any software updates that may improve battery life.
If the common solutions don't help you, you can try the following solutions to fix battery-draining issues based on specific scenarios:
Phone battery drains fast when watching video
Phone battery draining on standby mode
Phone battery draining while charging
If the issue remains unresolved, back up your data and take your device and proof of purchase to an authorized realme Service Center for assistance.