There isn't a built-in way to hide existing text messages in iOS, but you can search for apps that will hide your messages by typing "Hide Texts" into the app store and reviewing the results.
You would have to convert your Windows installation into a vmx file, then create a new virtual machine which matches the OS you want, and use the vmx file as...
First, open the specific message you want to delete and press on it with our finger. A small menu will appear. From there, click "More," then on the bottom left...
Maybe because the messages have been locked or you're not doing the right thing. You have to press a text and it will say more and then you check the...