I have never seen my phone connect to any random unsecured network, even though I have seen them present. But I also don't recall if there was a setting I may have chosen to do this.
It should auto connect to remembered networks. All availible will show though. So any you use it will remember and automatically connect when in range.
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yes, that is expected behavior of any wifi device. I thought the question was if it would connect anytime it saw an available network, even ones it was not explicitly told to connect to.
No it won't auto connect to unknown networks, will just notify you that they are availible.
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