In the various smartphone APIs/SDKs, I was wondering if it is possible to prompt a user if they'd like to log a phone call after they hang up. The most basic functionality would be after calling out or receiving a call, the phone would ask
Do you want to log the call to|from 555-555-5555?
Yes | No | Never this number
(then it might take the user to a small form and then post the info to a webservice)
The business use is for lawyers who have company phones and need to track billing.
This is a bit different question than Accessing the iPhone's Call log with the iPhone SDK.
On an Android phone you can register a PhoneStateListener to receive a notification of when a call hangs up and log the number by whatever method you wish.