Dear, electronic invoices can be found in the "sticky notes" of WeChat and "city services" of Alipay. The process of querying electronic invoices by WeChat: 1. Open WeChat and click "I" in the lower right corner. 2. Click the "Card Package" button after entering the page, and then click the "Bill" button. 3. Enter Invoice to view your electronic invoice information. The inquiry process of Alipay electronic invoice: 1. Open your phone, find Alipay, click Enter, and click "More" to go to the next page. 2. After entering, select "City Service" to enter the next page. 3. After entering, click "Electronic Invoice Inquiry". After entering the next page, click the electronic invoice query again. 4. After entering the next page, enter the invoice information to be queried and click Query.