How to check last month's bill by texting?

1. If you are a Unicom user, write a short message' 103' and send it to' 100 10' to inquire about last month's bill.

2. you can also log in to the APP of China Unicom's mobile phone business hall and click "service" > "inquiry" > "telephone bill business inquiry" to inquire about your real-time telephone bill, historical bill and other consumption conditions (at present, you can inquire about the historical bill of recent 12 months). The above path is subject to the information actually displayed on the query page.