Auto restart problem

[Akajal]

I have Samsung M21 phone .

I purchased the phone 22 Aug 2020.

From 01 March 2022

 My phone have issue face auto restart problem. 

I visited service center 

He told replace motherboard .

Motherboard cost is 8k approx. 

I cannot afford the price .

Please suggest what I do 

[Satya_Chandra_Kiran]

Exchange your phone to another phone ,because exnos processor phones having the issue and M series phones has mostly ,most preferably take A series phones with out exynos processors

[JithinAjith]

No issues in Samsung Galaxy A51 ( Exynos 9611 )

[Akajal]

Exchange value is very low .
Only ₹3250
Please suggest some other way

[cs_member8]

Dear Samsung member,

Greetings from Samsung customer support.

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