Common causes
- Battery health is low or the battery is aged.
- Apps are using battery in the background.
- Weak signal forces the phone to work harder.
- Brightness, location and Bluetooth are active for long periods.
- Charging accessories are poor quality or unstable.
When to replace it
Consider replacement if the phone cannot last a normal day, shuts down unexpectedly, overheats while charging, or battery health is near/below 80%.