Should aggressive handover between WiFi and Cellular be on??

[Rutz1104]

In lollipop 5.1 developer mode there is an option which say " Aggressive handover between WiFi and Cellular ". Does this option helps to save battery than than the regular handover.

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[Rukbat]

Any "handover" will disconnect you from some sites (and the more secure the site, the more likely it is to happen). I'd worry more about that than about battery life.

When the site sees you suddenly coming from a different IP address (which happens when you change from wireless data to wifi or the other way around), the site says "wait a minute - this looks like the connection's been hijacked" and closes the session, basically disconnecting you. ("Basically", because the web is a disconnected model, so you're never really "connected".)

 

[ChromeJob]

(Landed on this thread thread while researching the setting under Marshmallow.)

Not sure I understand the answer above. According to this post on StackExchange, the developer option tweaks a setting which Wi-Fi State Machine to uses to decide to abandon a weak wi-fi signal and start using your cellular data connection.

Does it save your battery? Maybe. If it stops the wi-fi radio from expending energy on a weak AP connection, particularly during data transfer, and that saves power, sure. But I'd guess it has a negligible effect on battery because the radios are doing this switching anyway, just sooner with this enabled, as you move further out of range of the wi-fi AP.

BTW, I am not a network engineer, don't even play one on TV. Take my answer with a grain of salt.