Does the iphone automatically connect to wifi?

If you don't change the settings at all (just leave it the way it was set up when you took it out of the box), it will prompt you and ask you if you want to connect to an available hotspot when it finds one.

The downside to this is that keeping WiFi on all the time will reduce your battery life by quite a bit. It's actually better to just leave WiFi turned off except when you are really going to use it and need it.

There is a setting to be prompted or asked to join an available network or networks and if not, the iPhone will automatically join an available network if open.

After successfully joining a network, the network will be added to a known networks list and when within range of a known/previously joined network, the iPhone will join the network automatically without being prompted.

I was at a stop light and wanted to check the weather on my iPhone. I was amazed at all the wifi networks available where I was stopped. They were all locked. I have never actually stolen wifi that wasn't legitimately public. But I can see how I might if I just picked it up and the phone asked me if I wanted to use it.

Here's the thing...

This has been coming up a lot lately, so I just thought I would repeat what a previous poster noted...

The automatic popup wifi connection box ONLY pops up if you leave your wifi on all the time.

The wifi being on all the time drains your battery faster than not.

You'll need to make a decision - auto pop up with wifi on all the time, or manually connect without wifi on all the time.

Here's the thing...

This has been coming up a lot lately, so I just
thought I would repeat what a previous poster
noted...

The automatic popup wifi connection box ONLY pops up
if you leave your wifi on all the time.

The wifi being on all the time drains your battery
faster than not.

You'll need to make a decision - auto pop up with
wifi on all the time, or manually connect without
wifi on all the time.

Which means that you'll only get about 5 hours of heavy-use battery time instead of 7.

macbook pro Mac OS X (10.4.10)

Hooked up, but email sending Fails...

For some reason my Mail (especially 'Sent') fails repeatedly while trying to hook up to a Wifi Network that I have been hooked up to for hours (at home). I get failure notification as if it was the cell network failure ('EDGE failur'). The result is it takes 20-30 minutes to actually send an email when I am (and have been) hooked up to a Wifi Network.