First-time users: See the note¹ below first. 

¹Note: When you click on a link for a simulator above, a Warning - Security window may appear with the question, The application's digital signature is invalid. Do you want to run the application?. To make sure that you don't see this window again (on the same computer), check the box Always trust content from this publisher, and then click Run. This certificate allows you to use your computer's system clipboard in combination with each simulator's Snapshot and Paste tools.