Are there any/many cell phones that come with voice recorders? Not just something to take a 5-min memo, but a full-length voice recorder that can record an entire phone conversation?

It doesn't matter whether it's saved on the phone, or whether you have to send it to a computer to listen to it. Or is it more common to be able to download voice recorder software (and if so, what kind of phone do you need to be able to use that on???)?

Do you know of any phones that are good if you want to do voice recording (like telephone interviews)?? I'd especially be interested in hearing about models that are available with Canadian phone service companies, but I'd really just like to know what's out there...

thanks