I know there is a way to keep a running tally of data usage under the 'Ongoing' listing, where things like Wi-Fi connected display, but I can't seem to find it.
I had somehow made it display when I was just messing around with my new S3 - but after upgrading to Jelly Bean and having to fight to get my mobile network working with data gain, it has disappeared.
Any ideas would be greatly appreciated. (no, I don't want a widget.)
On my S3 I went into Settings->Data Usage. Pressed menu button. Put check in Show Wi-Fi usage. Just below heading you should see Wi-Fi. Select it to show Wi-Fi usage.
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