| Unable to start | dead battery | Connect the charger to charge the battery and reboot. |
| System malfunction | Contact support to resolve the issue. |
| Screen operation is not responsive. | mishandling | Operate with your finger (capacitive screens do not recognize non-conductive touch). |
| Hands or screen are wet. | Wipe off any moisture or sweat from your hands and screen, and operate the product in a dry condition. |
| White screen/black screen at startup | Display Abnormality | Reboot the device to check. If the problem persists, contact support. |
| Display time is not accurate | Not calibrated prior to use | Perform time calibration with the Background Management Tool. |
| Had not been used for a long time | Perform time calibration with the Background Management Tool. |
| Unable to communicate. | Network instability | Make sure Wi-Fi is enabled and connected. |
| Make sure the 4G network is active, the SIM card is inserted, and that there is sufficient traffic. |
