Have a certain economic ability, in other words, have a certain fixed income.

Good credit.

Good credit here is a personal credit problem. For example, whether it is blacklisted by operators.

Many people don't know that they have been blacklisted by operators. The simplest way to tell is that the mobile phone will be turned off as long as it is in arrears, which means it is blacklisted.

When the credit is good, there will be a certain credit limit for temporary use.

If you have a bank card, you don't have to apply for a credit card, just a savings card.

You can try to apply for installment payment online.