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Is there a way to turn off wi-fi power saving mode on Android, i.e. have the wi-fi radio stay on at all times? I'd rather have a stable, low-latency wi-fi connection and slightly less battery life than a flaky wi-fi connection and longer battery life. In other words I'd like to enable constant active mode for my wi-fi.

EDIT: To clarify, I'm talking about the millisecond time scale power saving mode that's part of the wi-fi standard. This is where the radio wakes up on every beacon, not the minute time scale power saving where wi-fi is disabled completely.

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What exactly do you mean by power saving? Are you referring to when your screen is off (the wifi "sleep policy")? You may want to look at How do I keep my wi-fi on in sleep mode – eldarerathis Jan 25 '12 at 4:09

Settings -> Wireless and network -> Wi-Fi settings -> (Menu) Advanced -> Wi-Fi sleep policy -> Never.

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