Privus Offers Better Caller ID for Cell Phones

... Privus Caller ID info is dependent on your WAP/3G connection. If it's on when you get the phone call, and it's pretty darn quick, you will get caller ID info. The service pulls identifying info from a DB somewhere on the Net. If your WAP/3G is off, or if it is indeed slow WAP (instead of faster data like HSDPA or EVDO) then you may not get the caller ID info before you answer or it goes to VM.

Also, the caller ID info does not seem to be up to date. I called from my office phone, which normally gives the name of the company to phones with Calling Name Delivery, and on their service it just said "Texas" - which it used to say about 4 years ago.