The service has become indispensable for travelers. Previously, I had to rush to find SIM cards with internet on-site, often overpaying local residents. Now, everything can be done in advance at home, saving money. The only condition is that the phone must support virtual SIM cards; otherwise, it won't work. However, most modern phones already have this feature. There may also be difficulties with payment from Russia, so I recommend using virtual cards from foreign banks, which can be created online in just 10 minutes. Additionally, with promo codes available online, you can get 3 dollars credited to your account for free.