. Connect YESUP to your computer. Install all drivers from Support area. Put YESSIM in YESUP Press "Connect YESSIM" . Factory settings of your yessim are : Normal Mode / Universal MCC- MNC / 30 Patch count. Those settings should work with 85% phones. in case your phone not detect your provider sim card or doen't catch nework you will have to change YESSIM settings. Pls report to FAQ for the use of SIM MODE / SET MCC-MNC / MCC-MNC Patch . First of all you have to make sure the card and yessim are well insered into your sim reader. In case your sim is not detected in Normal mode pls set Boost mode. . In case your sim is still not accepted you will have to chose the same MCC-MNC as the phone you wish to use. Pls refer to the list. Press Set MCC-MNC . MCC-MNC Count patch will allow you to catch the network. By deflault the value is 30 first test this the original value before any modification. Only few countries will need to use this option. You will need to make test wil lower value like 1 to try catch network increase the value until your phone catch the network. Kindly share your experience in our support forum then Click on MCC-MNC Patch