Does the 4s have a "back" button?

Well in the itunes store you always have the back buttons top left - pointed rectangle shape. Similar in Mail. In Safari your back and forward buttons are bottom left. There's usually some way to navigate within apps. There is no one "back" button to take you back to one app from another.

I have the same question. But it's about going back to the previous page, not app. For example, just trying to read this message in my email, I accidentally clicked something and ended up in the Apple store. I couldn't get back to the message without starting over from my Yahoo app.

@luneluxe

Yahoo app?

You should be able to get your yahoo mail direct to your iPhone via the Mail app. That way if you pressed a button by mistake, you can just double tab the Home button and press Mail again, then continue as normal.

OK, thanks, Will. I will look into setting up Yahoo in Mail.

But -- I can't believe the iPhone doesn't have a back button (or arrows). I've needed it when I'm typing something and need to go back to the beginning to fix something. I have to delete the whole thing and start over, really?

If you're typing an made a mistake, just point and hold your finger at the location where it needs amending, you'll see a magnifying glass, drag left or right to fine tune spot remove finger and the cursor will be there, amend as normal, then repeat to go back to where you were.

Hope that makes sense.

Back button from where to where? If you want to get back to a recent app, double-click the Home button to bring up the multitasking bar and relaunch the app from there.

That works! Thank you!