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Your question has some ambiguity. Bluetooth is a more energy efficient protocol than wifi. USB hardly uses any energy for the data protocol. However, with USB the laptop can charge the phone, as is mentioned here before. From the point of view of the phone, compared to bluetooth and wifi, the phone's power consumption with usb can be negative. From the ...


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Mobile data means Internet access on phone via mobile network. It costs you money when not on Internet plan. Turning it off is very easy. Open notification bar turn off Mobile Data (icon with 2 arrows one up one down) -or- open Settings>(More)Mobile networks> (uncheck) Mobile data (SIM1 & SIM2).


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When you are connected to your home wifi do you see the notification to 'Sign into Wi-Fi network'? If you tap on that item and then the 3 dots menu you will have the option to 'Use this network as is.' I'm in a similar situation as @Seraphim's host and so far this solution seems to be working. edit: This solution isn't working 100% fo my situation, ...


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I manage to get it works by change the router wireless mode from 802.11n only to bgn mixed, or better option like Izzy suggests gn mixed


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You need to enable your Wi-Fi for that option to be available for checking or unchecking. Seems like a bug since I don't see any reason why the Wi-Fi should be enabled for the option to be available for toggle.


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Yes usb tethering is the most efficient method as compared to other methods. It can be used to charge your phone while working. Wifi tethering consumes too much battery and bluetooth tethering is very slow.


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Performing actions whenever a certain Blutooth device is in reach and paired (and reverting them when it gets out of reach) can be done e.g. with tasker (see the tasker tag-wiki for details on the app): Condition: BT Connected (parameter: name or address of the device) Task: WiFi (parameter: On) Exit-Task: (optional; Tasker should revert automatically to ...


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Android 4.x will connect to the strongest available network when first connecting, but, by default, once connected it will not change networks unless it loses its connection first. This is presumably because switching would involve disconnecting existing connections, and a second or three of no network. If you turn on "avoid poor connections" in the ...



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