Please tell us some basic information before asking for help:
Model Name: ZS661
Rooted or not:NO ROOT
Frequency of Occurrence:
APP Name & APP Version (If your issue relates to the app):Version V188.8.131.52
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.
I TRIED TO UNLOCK THE BOOTLOADER BY THE APP AND HE SAYS IT UNLOCK BUT WHEN I GO TO FASTBOOT IT IS LOCKED !!