Please tell us some basic information before asking for help:
Model Name : ROG Phone 3
Firmware Version:17.0823.2007.47
Rooted or not: Not rooted
Frequency of Occurrence: Everytime , everywhere.
APP Name & APP Version (If your issue relates to the app): Everywhere.
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.
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I am really worried and depressed. Flipkart is also denying replacement and refund. Atleast please contact the Flipkart (India) seller to give refund without any obligations.