I attempted to use my google voice app to call their support number. When I put the number in, the app said the number was invalid. I websearched for google voice and calling out of te country and the first website i found implies it is supported: https://www.businessinsider.com/how-to-make-international-calls-with-google-... They also do skype support. I'm on redhat so I tried to install skypeforlinux. The install failed with an obscure error: $ sudo yum install skypeforlinux Loaded plugins: langpacks, nvidia, product-id, search-disabled-repos, : subscription-manager Resolving Dependencies --> Running transaction check ---> Package skypeforlinux.x86_64 0:8.79.0.95-1 will be installed Error: Invalid version flag: or The support number is +86 21 6220 7593 x8007 . The support skype account is service@unihertz.com . I discovered my system has a _lot_ of package updates queued, so I'm upgrading its existing packages.