ALERT! Those who have restarting problem should follow this.

[Sid_Karna]

Link which explains the process about how a fellow member solved the issue: https://r2.community.samsung.com/t5/Tech-Talk/Auto-Restart-Brand-solution/td-p/10333335

Sorry the above video seems to be deleted by the uploader. This is a related link. 

https://youtu.be/MqxFrVLtIwM

[Anonymous]

He is a very good youtuber ......

[Sid_Karna]

Yup, very helpful

[DarkClawX]

Did u get a free replacement ??

[Sid_Karna]

No I didn't, because I never needed it. However many got and there is evidence if you wanna dig.
Anyways there is no harm in trying the ONLY option.

[Sarwes]

I did same what they told in vdieo. but cusotmer support disagree to give discount. it has issues with restart automatically while using. I never got wet with water or threw my mobile. You can check with report provided . I cant tolerate this. I contacted customer support. they told me to create job sheet with a nearby service center and sent the job sheet for a discount of 6k. I also uploaded a job sheet and changed the motherboard. Now customer support is completely disagreeing with discounts because of completed process of motherboard. Now I need to pay 6k of my own money  usage for 1.6 years. I planned to use this m21 for 4 years.  I never thought this worst happen with your brand. 

[Sid_Karna]

Don't pay. Approach consumer court.

[Sid_Karna]

"your" brand?

[Nitin1490]

I am also facing the problem with my M31s... Freezing and restarting anytime.. while using phone or not

[boywidlens_]

Same 😔