It's a motherboard failure that is common in Exynos 9611-based phones. Get the phone to a service center. They will ask you to pay 8k. Ask them to give a job sheet. Then mail it to the Samsung CEO mail address along with a full explanation of your issue. You will get it repaired at 2.5k or less, depending on your service center and the way you present your issue.
Thank you for sharing your concern. We acknowledge your query and apologize for the same. And please follow the easy troubleshooting steps which might help to solve the issue. Kindly use a genuine Samsung charger.
Note: We always recommend using a genuine Samsung charger for charging your device. There are two methods to disable the auto-restart function Method 1
Please follow the below steps: Step1: Navigate to the app's screen and tap on Settings. Step2: Tap on General management. Step3: Tap on Reset. Step4: Disable Auto restart (if enabled). Step5: Auto-restart disabled.
Please follow the below steps: Step1: Go to "Settings" Step2: Tap on "Battery and device care" Step3: Tap on Three dots Step4: Tap on "Automation" Step5: Disable "Auto-restart at set times" if enabled
In case the issue still occurs. Please register your concern in Samsung Members Application (Open Samsung Members Application > Get help > Send Feedback >Error report).
Thank you for writing to Samsung. Warm regard, Samsung customer support
