Fast battery drain usually means an app, setting, or background process is using more power than expected.
Common causes
- Brightness too high
- Background apps
- Weak signal
- Old battery
1. Brightness too high
Screens use the most power.
Quick fixes:
- Lower brightness
- Turn on auto‑brightness
2. Background apps
Some apps run constantly.
Quick fixes:
- Check battery usage
- Disable background refresh
3. Weak signal
Phones use more power searching for signal.
Quick fixes:
- Turn on Airplane Mode in low‑signal areas
- Connect to Wi‑Fi
4. Old battery
Batteries degrade over time.
Quick fixes:
- Enable battery saver
- Reduce screen‑on time
What to try first
Check which app is using the most battery.
When to call a professional
If the battery drains from 100% to 0% in hours.