1. First click "Download Gap" button.
2. A dialog opens and click the Install button.
3- Automatically Gap messenger installation starts, wait until the installation is completed
4. Now, to activate the software, depending on your operating system version, go to one of the following paths in the phone's settings:
Settings -> General -> Device Management
Settings -> General -> Profiles & Device Management
5. A dialog opens and click the Trust App.
Gap messenger is now at your service!