Hi
gopinath11212,
You can try below troubleshooting:
Check if your software version is latest, i.e. 31.0810.1226.139
Factory reset your phone post update
Try SMMI test to check if this is something related to hardware:
How to Enter SMMI_TEST (test hardware)
Go to Calculator=>type " .12345+= "
you will be entered to SMMI_TEST
Kindly visit the nearest service center:
https://www.asus.com/in/support/service-center/india
