T9 multitap on the iPhone? Yes! an iKeyEx keyboard available via Cydia does the trick. After installing all you need to do is hit the Globe on your iPhone / iPod Touch keyboard and Multitap would be one of the available alternatives.
The multi tap keyboard is good for Nokia users shifting to the iPhone. This is certainly something we hope Apple puts officially into the iPhone to increase its compatibility and reach. After all not everyone buys that iPhone for the QWERTY, some jut want a cool phone that they can use 
Make sure you have activated Multi Tap keyboard in Settings>General>Keyboards>International.
Tested in email, sms, safari. Portrait and Landscape mode. Works!!
UPDATE: Well this isn’t T9 technically. Its simple SMS typing. A dictionary integration would make it T9. But I many would still like it over the iPhone QWERTY.
Via SOS iPhone Source on Cydia
iPhone / iPod touch downloads
{ 12 comments… read them below or add one }
To bad this isn’t T9 at all. This is simply ABC.
T9 would be
to type this sentence
“The dog ran fast”
You’d press.
8430364072603278
But with ABC
Which is what this keyboard ACTUALLY is.
You’d press
8443303666407772660333277778
I downloaded this keyboard because I love T9, I hate QWERTY and I hate ABC.
Comeone T9 come to iPhone :’(
Man..thats a well researched comment..lol
But yeah..timothy is right..t9 is more a kind of dictionary which saves words as they are typed..but I dont think t9 would ever come to iphone officially by apple as they have their own dictionary..(which is kinda irritating)
this does not work on OS 3.0
PLEASE REAL T9 ON IPHONE
QUICK…
LET’S BIG FINGERS HAVE THE RIGHT TO WRITE TOO
did someone heard about T9app?
Doesn’t work on 3.1 either… really annoying. If it did work, it would be so much easier to type a text while walking somewhere…
Where do I get this application from?
pls let us know when its avail on OS 3.0 – need this
too late for me … I go back to BlackBerry storm 2 !
i want vfcaller t9 pad in default iphone dialing pad
Will there be an update to have this on iPhone 3.0 upwards? Thanks.