Please tell us some basic information before asking for help:
Model Name:zc600kl
Firmware Version:9
Rooted or not:no
Frequency of Occurrence:0
APP Name & APP Version (If your issue relates to the app):system
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.
========================================
