Help Question on data usage

[Gabriela13]

First smartphone ever, Galaxy S2. My question is, does the phone automatically detect wifi and switch from the data plan to wifi once it's detected? Or do I have to go through my settings and manually turn off my data plan network, if so how do I do that?

If I download apps when connected to wifi, am I still using up my data plan? I have a 5GB data plan with US Cellular.

Thanks in advance everbody

 

[Hawker]

A wifi connection always takes precedence over data, so if connected, you won't use any of your providers monthly allowance. When you are out of range data will then automatically kick in, and likewise, when you come back into wifi range it will reconnect seamlessly

 

[dapsonddroid]

And if u by anyway want to turn off the data, Just long press the power button and select the data network mode to deactivate and like wise to activate.