How to invoice the telephone bill?

Take Unicom as an example: there are four types of electronic invoices to choose from:

1, monthly invoice: the invoice issued by the bill of consumption details for a whole month;

2. Paid-in invoice: an invoice issued according to the actual payment amount;

3. Business invoice: the invoice issued by the business expenses charged by the business hall (excluding the payment invoice). Generally, it is prepaid fees, replacement cards, and price difference purchase;

4. All-in-one-card invoice: an invoice issued after purchasing the face value of a prepaid card or recharging a specified amount.

You can log in to China Unicom's mobile phone business hall to print electronic invoices.