Yes, the app works well in the world.
Of course, for installation time you must take the device in your hand within around 5 minutes.
After that, you can view the data remotely using the user control panel site even the target device is far you thousands of kilometers or overseas.
Question: My targeted device has moved to UAE and using the SIM. Will it work without any problem? Is the software based on SIM or device?
Answer: It will work without any issues. The application works based on the device. So when the target user changes the SIM, no problem. And there is a notification of SIM changed will send to you (you should configure monitor number is your phone number).