Sim card tester and signal probing for iPhone iPads

Sim card test board with 3 sim slots to test different cards. No need for a sim card tray, Insert sim cards on the board, plug board into iPhone or iPad,  move the onboard switch left or right to switch between sim cards and test.  You can also probe the pins on the test board to detect signal without inserting a sim card. Very handy tool for quickly detecting signal issues or testing sim cards all in one.