Send a 15 digit short message to your mobile phone.

Not credible. Just remember that there is no such thing as a free lunch, and you won't be fooled if you don't take advantage. More than 2,000 mobile phones 1000 can't be sold to you, which is a good thing. There must be something wrong with this website, stealing your information and so on. Nowadays, mobile payment has greatly facilitated the masses, and transactions can be completed by operating on mobile phones. Many people have been hacked.