I often need temporary numbers to test various applications, whether it's registering for overseas websites or verifying SMS interfaces. Buying new SIM cards is too wasteful. Later, I discovered the concept of SMS receiving platforms. I've used them for a while and encountered quite a few pitfalls. Today, I want to share some stable SMS receiving platforms I've used.

Basically, SMS receiving platforms are about renting virtual phone numbers to receive verification codes. Unlike regular phone numbers, these numbers are usually charged per use, and some even support monthly packages, making them especially suitable for frequent users. The most commonly used one for me is SMS-Activate; verification codes arrive very quickly, usually within 10 seconds, and it covers many countries, which is very convenient for cross-border application testing.

In China, I mainly use Super Cloud SMS and Xiaoniao SMS. Super Cloud SMS's US number segments respond within 10 to 30 seconds; Chinese segments are even faster, with receipts in 5 to 20 seconds, though it might be slower during peak times. Xiaoniao SMS mainly handles domestic applications, and you can usually receive codes within 5 to 15 seconds, offering good value. I also tried 5SIM and Getsmscode; the former has clear API documentation, and the latter is cheaper—choose based on your needs.

When using SMS receiving platforms, be aware that some numbers are shared, which can be flagged as risky numbers, and verification codes might be delayed, especially for less common countries or applications. My experience is that if you're just testing interfaces, any platform supporting API is fine. But if you need stable registration on a specific website, it's best to prepare several numbers so you can switch quickly if one becomes invalid. Some platforms also have a one-click number switch feature, which is super practical.

Overall, if you often need temporary numbers, SMS-Activate and 5SIM perform the most stably, with low latency and broad coverage. But remember, SMS receiving platforms are mainly for privacy protection and testing purposes—don't use them for illegal activities.