How can China Unicom use text messages to transfer phone calls?

China Unicom call charges cannot be transferred.

If you use a China Unicom recharge card, you can recharge it on Alipay and then transfer it to another operator's number. The method is as follows:

1 You cannot directly use the China Unicom recharge card to buy things.

2 You can choose to recharge to Alipay before purchasing things.

3 Log in to your Alipay account - My Alipay - Recharge, as shown below:

4 Click on the phone recharge card; (supported types and denominations of phone recharge cards)

5 Enter the recharge card number and password.

6 After successful recharge. Log in to your Alipay account - Transaction records - Inquiry of income and expenditure details to see the recharge amount and deducted service fees.

7 The funds obtained by recharging the phone recharge card into the Alipay account can only be used for consumption and cannot be applied for cash withdrawal. If you want to withdraw cash, you can purchase products through Taobao.