I turned off my wifi connection and noticed a heavy impact on my battery life. In a few hours without any usage, it dropped more than the whole day before.
See the drop at end while wifi (WLAN) was disabled:
There are many issues where battery life is reduced when wifi is turned on but not when turned off. What could cause this and how can I fix this? Could it be using some mobile data connection that drains the battery more than wifi or is it a device problem?
While wifi was on, it was actually connected to a network. There is no increase in mobile data usage. No suspicious increase for battery consumption for any particular app. Top consuming apps are:
- idle 40%
- display 19%
- mobile standby 18%
- android os 13%
- wifi 6%
- google services %4
- android system 2%
Update: It looks like it's constantly switching between E, 3G, H and H+ every few minutes, even without moving the phone. In 2G mode the connection seems to be stable and the battery loss is gone.