I recenty bought an Asus Zenfone 2 Laser (ZE551KL) with Marshmallow. Battery wasn't good from the start but it got worse and worse, mainly because Wi-Fi uses up to 2/3 of a full charge. I don't watch videos, I don't download content, I only read or play games about 1 hour day. Most of the drain happen mostly when the phone is on standby even if wi-fi is disabled in sleep.
- Notify when public network is available is OFF
- Keep Wi-Fi on during sleep set to NEVER
- Improve location with Wi-Fi scanning is OFF
The only thing that works is disabling the Wi-Fi.
How can I prevent so much battery use by Wi-Fi?