Cannot delete iMessages Ever since updating to new operating system I cannot delete iMessages from my iPad. I had an Ipad 2 and bought a new iPad Air 2 today, but I still have the same problem.
To delete one or more iMessages from a conversation, tap &amp; hold one message until the Copy | More float appears, then tap More.
You can than add or remove checkmarks from individual messages in that conversation &amp; delete using the trash can, bottom left.

To delete an entire thread, from the overview drag the thread name to the left - a delete button will appear on the right.