does wifi always send data with no apps open?

[T.Time]

I downloaded the netmeter app to keep track of my data usage and saw that while i was on wifi data would be transfering even with no apps open but not while i was on 3g. is that normal? sorry i'm new to smartphones.

 

[BobPaul]

Maybe that is just google sending back usage info. I mean doesn't anyone else wonder why google is footing the bill for android?

 

[djgibbsjr]

Did you opt out of giving google data? Google recieves wifi data for location purposes and streams small amounts of packet data to obtain info on device usage. Nothing personal but its a fine line for google, so they say.

 

[PGP_Protector]

How much Data ?
And what apps were running during that time?

You might be seeing your e-mail client checking for new message, messaging software checking / keeping connections alive, weather software checking data, ect.

 

[alphadog00]

Do you have any widgets that check for data updates? news, weather, RSS feeds?