Please tell us some basic information before asking for help:
- Model Name:zs661kl
- Firmware Version:17.0823
- Rooted or not:not
- Frequency of Occurrence:
- APP Name & APP Version (If your issue relates to the app):
In addition to information above, please also provide as much details as you can, e.g., using scenario, what troubleshooting you've already done, screenshot, etc.