Does anyone experienced lower battery backup after the update?

No i mean the inbuilt battery of the iphone. It started draining at a much higher rate, atleast that's what i have experienced so far since the 15.0.2 update from 11th of october.

I'm from India btw and thank you for the quick reply.

Its 100%. I think the update has some issues, as per what i have been experiencing since.

Do you use any graphics intensive apps like pubg or something else?

Will definitely try that after 2-3 more days of observation. Thank you.