Why does Bluetooth use so much battery?
So having Bluetooth turned on, when you’re not using a Bluetooth device, isn’t going to drain your battery any more than having Wi-Fi on when you’re not accessing the network.
Yes, they may pull an insignificant amount of energy from your battery, but they will not drain it over the course of a day.
Does turning off Bluetooth save battery?
Myth: Turn off Bluetooth
Many people recommend disabling Bluetooth on your phone to get better battery life. In our testing, having Bluetooth on but not actively connected to a device used a negligible amount of battery power over several hours.
How much battery does leaving Bluetooth on use?
When Bluetooth has an active paired connection to a hands-free device it consumes 2.5 mw. As the battery capacity of an iPhone 8 (not plus) is about 6900 mwh, if Bluetooth was the only thing using power the battery would run down in about 2800 hours, or about 3 months.
How do I stop my battery from draining?
- Check which apps are draining your battery.
- Uninstall apps.
- Never manually close apps.
- Remove unnecessary widgets from the home screen.
- Turn on Airplane Mode in low-signal areas.
- Go Airplane Mode at bedtime.
- Turn off notifications.
- Don’t let apps wake your screen.