If my phone number is not saved and deleted, how can I get it back?

Take Unicom users as an example. If the phone number has not been saved or deleted, you can log in to the online business hall and the mobile phone business hall client to retrieve the phone number you dialed or answered before. At present, you can view the call list of the last 6 months (including the current month). The specific operation steps are as follows:

1. Online business hall: Open the online business hall, enter your mobile phone number and service password to log in, and then click "self-service-business inquiry-bill inquiry-bill details inquiry" and follow the prompts on the page.

2. Mobile phone business hall client: Open the mobile phone business hall client, enter the mobile phone number and service password to log in, and then click "Service".

Then click "Inquiry-Telephone Fee Business Inquiry-Call Details" and follow the page prompts to search.

Reminder: Detailed bill query is not supported in accounting period. The billing time of 2G and 3G is from 8: 00 am to 3: 00 am on 10 every month, and the billing time of 4G is from 8: 00 am to 4: 00 am on 10 every month.