1. Electronic invoices cannot be issued when the mobile phone is in an abnormal use state such as arrears or shutdown.

2. Monthly invoices cannot be printed during the invoicing period at the beginning of the month, and electronic invoices can be printed after the 4th day of each month.

3. Recharge the phone bill through third-party payment platforms such as WeChat and Alipay, and ask the corresponding card sellers such as WeChat/Alipay for invoices.

4. Last month, I handled the business of 2/3G to 4G, transfer and account consolidation. This month, you need to bring the owner's valid certificate to Unicom's own business hall to receive the electronic invoice.