Not reliable
Service worked reasonably well in the beginning, but after a year, it stopped working in Korea, and their head engineer kept blaming it on local carriers and was extremely rude and arrogant, bragging about how he worked for a large telecom before. At around the same time, I stopped getting text notifications when I used to be able to before for verification. Coverage was also spotty in Turkey and Greece. The price might be reasonable, but not anymore for me. The call quality is also poor a lot of the time, where there's a lag.