In the text messaging application that came with my Android phone, a checkmark seems to appear next to text messages that have been successfully delivered. How can I find out when a text message was delivered?

**Update:** The text messaging app might be a custom one. It's the default for Sony Ericsson Xperia X10 mini. A couple of screen caps I've found:

![](https://i.stack.imgur.com/VDlwW.png)
![](https://i.stack.imgur.com/JCWzP.png)