Symptoms
- Battery drains noticeably faster in areas with 5G coverage
- Phone runs warmer when using data outdoors
- Battery life improves when switched to LTE/4G
- 5G icon shows constantly even during light use
Likely causes
- Common5G radio using more power than LTE, especially on weak signal5G networking hardware draws more power, and it draws even more when the signal is weak or fluctuating between towers.
- CommonConstant switching between 5G and LTE in marginal coverage areasRepeated handoffs between network types consume extra power each time.
- PossibleData-heavy background tasks taking advantage of a fast 5G connectionFaster networks let apps sync and download more aggressively in the background.
- PossibleCarrier network conditions in your specific area5G drain varies significantly by carrier and local tower density.
What to do
- Go to Settings > Network & internet > SIMs > Preferred network type.
- Try switching from 5G to 4G/LTE to see if battery life improves.
- Compare battery drain over similar days with 5G versus LTE to judge the real-world difference.
- Reduce background data or sync for data-heavy apps that might be taking advantage of a fast connection.
- Check signal strength in your usual locations, since poor 5G coverage is the biggest drain factor.
- Use Battery Saver in areas with known weak coverage.
- Revisit the setting if you travel to areas with strong native 5G, where drain is less of an issue.
- Contact your carrier if 5G performance itself seems abnormal for your area.
When to call a pro
This is a settings and network coverage issue, not something a repair shop addresses; contact your carrier if 5G performance itself seems abnormal for your area.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.