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My Samsung Galaxy S4 (Verizon) running 4.2.2 (with the VRUAME7 Build, so root is not an option currently) has both the WiFi and 4G/mobile data symbols in the notification bar, occasionally the mobile data symbol will go away, but it is there more often then not.

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So I have read through this forum and it says that by turning off the Caller Name ID app that this should remove the mobile data from the notifications. I have done this and it has not removed the symbol.

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My phone does not seem to be using the mobile data, but I would like to know if it is in fact using the mobile data while connected to WiFi?

Shouldn't/Does the mobile data turn off when connected to WiFi?

If it does not turn off the mobile data, why not and can I fix this with Tasker? That is a HUGE waste of battery!

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Your phone is not using both WiFi and 4G, but the 4G radio stays on and stays in sync with the tower (if you move from a 4G to 3G area while still on WiFi, you'll see the icon change when it recognizes the tower swtich).

On my Droid Bionic (Verizon), I have a Tasker script that turns off Mobile Data when I'm connected to Work or home WiFi networks; my battery life is greatly extended with this setup, and the phone works as I expect (I'm told that MMS messages require the Mobile Data connection, but I rarely receive them, so I can't say if that's true; if so, it may be one reason the radio stays on by default).

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  • Looks like I'm getting myself Tasker! Thanks! :)
    – TronicZomB
    Jul 18, 2013 at 0:47
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    The things that Tasker can control vary by device and Android version; I don't know if Mobile Data on/off is available on every devices; there's a support forum at tasker.dinglisch.net if you want to double check.
    – TomG
    Jul 18, 2013 at 0:49
  • Thanks! Yea I had come from iPhone to a Galaxy Nexus for a short period of time and now the S4 for a week, which has a TON for me to learn still!
    – TronicZomB
    Jul 18, 2013 at 0:52

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