My Sony Xperia S has an Extended Standby Mode which states that WiFi and mobile data are disabled after a time when the screen is off.

However, sometimes this stops working and the battery starts falling quickly, and BetterBatteryStats shows that WiFi was on 100% of the time for the last 22 hours. Usually after I reboot the phone it starts behaving normally.

This is the explanation text for the Extended Standby Mode:

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And I know for sure that I don't have any downloads or uploads running.

What is happening here? How do I make sure that Extended Standby Mode really works?

  • Have you check the "Power Settings" or "Battery Settings" in the settings? It has it's own graph for showing when the Wi-Fi is enabled. Maybe BBS gives a false positive. – Aleksandar Stefanović Mar 21 '15 at 10:28
  • @AleksandarStefanović Unfortunately I've already plugged in my phone to the charger so the battery stats are reset. I'll need to wait until I can reproduce. – sashoalm Mar 21 '15 at 10:31

Go to settings --> wifi Press menu key or 3 dots Tap on advanced Untick always scanning option. And wifi will stay down when off

  • I can't find that option. There is only "Keep WiFi on during sleep", is that it? – sashoalm Mar 22 '15 at 20:19

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