iPhone 3GS chooses 3G over wifi

[viola75]

In order to connect to any wireless network, I have to turn cellular data off. I've had the 3GS for a year and this is a new problem in the last couple of weeks.

How can I get my phone to go back to automatically choosing wifi over 3G when it's available?

 

[enygmagyrl]

In order to connect to any wireless network, I have to turn cellular data off. I've had the 3GS for a year and this is a new problem in the last couple of weeks.

How can I get my phone to go back to automatically choosing wifi over 3G when it's available?

This may be a weird question, but do you have your "Ask to Join Networks" button on?

 

[Applejuiced]

Restore it.

 

[viola75]

enygmagyrl, yes I do. I was hoping not to have to restore the phone, but I will do that tonight. sigh.