Fake. According to the public information inquired, this is a big gift-giving activity of China Mobile. You can get the corresponding mobile phone in advance, and the phone bill is 400, of which 100 is directly received, and the other 300 can be divided into two ways. First, it is agreed to spend 600 phone bills within one and a half years, and the original 300 will be returned to the account. The second way is to return 15 every month until the remaining 300 agreements reach a certain amount. Note: If the agreed consumption amount of any of the above refund methods is not reached, your refund phone bill will be regarded as liquidated damages.