Do you get Wi-Fi were ever you go on an Iphone 4?

My friend has an Iphone 4 an it seems like she has Wi-Fi where ever she goes because she's always going on instagram and on the internet on the bus. Can someone help me?

Your friend is using the cellular 3G signal on the bus, not Wi-Fi.

She is most probably using her data plan, not a Wi-Fi connection.

To answer, no you don't get Wi-Fi everywhere with an iPhone 4 or any phone for that matter.

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