STEP 1: Turn off your Apple iPhone and insert your SIM card and Gevey SIM together with the metal SIM tray provided by Gevey Sim Pack. STEP 2: Turn on your Apple iPhone and wait for the SIM welcome menu to show and the select “accept”. STEP 3: At the beginning a “no service” message will show on your Apple iPhone 4 4G 4Gs. DON’T do anything and wait until you see one single signal bar appear on the top left corner. STEP 4: After you see the single signal bar dial “112′ and end it within 2 seconds. STEP 5: Turn on “Airplane Mode” and “No SIM Card Installed” appear then turn off right away. Your iPhone 4 will show “SIM failure”. STEP 6: Until the “No Sim Card Installed” message shows up turn on the “Airplane Mode” again and turn it off right away again. The “Sim failure” message will show and then the signal will show up after a few seconds. NOTE: After all the steps above, if there is still no signal then power off your Apple iPhone 4 4G 4Gs and turn b