1, VIVOX23: Turn on the calculator of the mobile phone and look sideways to see if there is any history. If there is a history, you can directly click on the history to view the previous calculation results.
2. Huawei Mate 10: Open the calculator of the mobile phone and drop down the box of the calculator to see the calculation records that have been calculated before. In the history, you can select the previous calculation results to view.