Recommend a third-party SMS verification code service provider, preferably from Shenzhen!

Shenzhen doesn't know much about it, but the SMS platform has no geographical restrictions. If they are not with you, they will be more reliable and faster. Their resources are likely to come from other regions, and they can also apply for a refund if the SMS sending effect is not good. If you are not clear, you can communicate with Babu further, hoping to help you.