I updated my phone in october, from next day phone was restarting automatically for every 10/15mins but now it gets stuck in bootloop and phone hangs at logo screen for hours.
when the issue will be resolved its definitely due to faulty software update .Before that phone are alright.
Send your Device log
And Wait for the next update
Visit Service Centre. Book a Job Sheet. Send a mail to Service head along with the Jobsheet Number.
Dear Samsung Member,
Greetings from Samsung Customer Support!
We acknowledge your query and apologize for the same. We request you to kindly visit the service center for a physical inspection of your device. You can locate your nearest service center with this given link: https://www.samsung.com/in/support/service-center/
Thank you for writing to Samsung.
Samsung Customer Support