I think the UX of the iPhone's text message app can be improved, in that after I come back from a conversation to the list, it has no visual clue for me to iden

I think the UX of the iPhone's text message app can be improved, in that after I come back from a conversation to the list, it has no visual clue for me to identify which was 'currently selected'. sometimes the text messages are similar and hard to distinguish them from each other in the list view.