I only just recently discovered something fairly useful called an SMS receiving platform. It’s a service that provides virtual mobile numbers to receive SMS verification codes. Back when I was registering overseas websites or testing interfaces, I kept getting blocked by the verification codes. Later, I found out about this, and it saved me a lot of hassle.

To be honest, I’ve stepped into a bunch of pitfalls before. Some platforms can’t receive SMS at all. Some deliver the codes only after half a day, which is especially annoying. After I finally figured out the right way to do it, I now use a few that are more reliable.

SMS-Activate is the one I use most smoothly. It’s extremely fast at receiving verification codes—most of the time you’ll get them within 10 seconds. It also covers a particularly large number of countries, which makes it great for people who often need to register things across borders. Super Cloud SMS supports both US number ranges and China number ranges: for US numbers, it’s usually 10 to 30 seconds; for China numbers, it’s even faster—5 to 20 seconds—but during peak hours it may sometimes be a bit slower. The interface of 5SIM is quite comfortable, and the API documentation is clear. I’ve tried registering both Google and Twitter, and everything worked fine. Bird’s SMS receiving platform is especially suitable for testing domestic applications—you can basically see the verification code in about 5 to 15 seconds, and the value for money is also pretty good. Getsmscode is the cheapest, so it’s suitable for light use, but some less popular platforms may have delays.

When using virtual numbers, there are a few traps you should watch out for. First, some numbers are shared, so they may have already been used by someone else, and sometimes certain services will flag them as risky numbers. Second, verification codes really can be delayed, especially for less common countries or applications. Based on my experience, I top up a few more numbers—if one doesn’t work, I switch right away. Many platforms support one-click number switching, and that feature is especially useful.

Also, don’t treat a virtual mobile number as your long-term main number—privacy and security can’t be guaranteed. If you’re only temporarily testing interfaces, it’s enough to just pick a platform that supports an API. But if you need to register a specific overseas website in a stable way, it’s best to prepare a few backup numbers, which reduces the chance of getting stuck. Based on my experience, SMS-Activate and 5SIM deliver the most stable results overall, with low latency and broad country coverage.