Create a Genius playlist on the iPhone and iPod touch

Ok i got the "Try again- Not enough Matches" error so i deleted my music from my ipod and then re-added it after sending/receiving genius info and now all my songs will generate playlists. Hope this helps!

I don't have the Genius function on my iPhone after the 2.1 sync even though my Genius has been enabled snce 8 came out the other day.

And I don't see the new feature with the text message either... having it be able to beep at you again if you don't hear it the 1st time. Where is that?

Stupid update.

Some people have reported having difficulties getting Genius enabled on the iPod even after having it enabled in iTunes. A work around that seems effective is to create a Genius playlist in iTunes, save that playlist, and sync that playlist to the iPod. I did that and, viola, now, instead of being told that I need to enable Genius, I am told that I don't haven enough related songs. I've essentially upgraded my error message. But that's not exactly true, because every now and again I can find a song that doesn't generate that message.
As for Genius playlist length, I don't see a way to adjust that on the iPod, but there is an option to change playlist size at the top any Genius playlist in iTunes. I don't know if those changes carry over, though.

How does one get the Genius playlist on the iPhone to contain more than 25 songs? Nothing available under Settings > Music.

iTunes on my Vista laptop still won't sync with Apple's servers to enable Genius. Error 4010 every time. So the Genius icon on the iPod doesn't work either. I wouldn't care if this whole Genius thing weren't now in my face every time I opened iTunes. It's only another way to get the user to consider buying new music anyway. As if we suddenly couldn't make our own playlists...

Better way to get to Genius on the iPhone and Touch: when on the Now Playing screen, tap the album art and it will bring up a half-transparent bar at the top of the screen as usual with the distance into the track and the shuffle and repeat buttons... and a Genius icon. Tap that to Genius right from that track.

The article is a little off, but I think the comments straightened most of it out. To summarize:

1) You must activate the Genius feature in iTunes 8.
2) You must sync to the iPhone/iPod AFTER #1 to put the Genius feature on it. (iPhones and iPods must be running version 2.1 of Mobile OS X).
3) You can then create a Genius list as the article describes, or just by hitting the Genius button below the scrubber bar while any song is playing.

I don't use the Genius recommended songs sidebar in iTunes (I keep it hidden), but I'm leaving Genius activated because I rather like the playlists it has created for me.

You have to reboot itunes. It works pretty seamlessly after that. However! I have only been able to generate genius playlists with about 10% of the music on my Touch and, even then, there is no real rhyme or reason as to which.
So, it can be frustrating.
I DID enable one that was, believe it or not, a song by The Raspberries and the Genius playlist was fantastic. It will work, it'll just take time.

Genius does not work on songs itunes doesn't sell, What a bunch of crap.

All we got with itunes 8 is a new visualizer and Genius.

I hope quicktime 8 is not the same BS!

Like others, I get the "Genius" option under playlists, but when I touch it, I get the ever popular "Genius playlists are not enabled. Use iTunes to enable Genius playlists". But I already have, and I've also sync'd since then.'

I'm baffled.