Originally Posted by salahfathi
Me too I always root at first night but the problem is warrenty
Rooting doesn't actually void your entire device warranty, that would be illegal. Knox is a security thing and gaining root access does compromise security so that makes sense the knox warranty will get voided. But if you think you can legally get denied for manufacturing defects because of rooting, you are mistaken my friend.
In short, there's the Magnuson Moss Warranty Act which sets the standards on warranties and the part that covers modding goes something like "The federal minimum standards for full warranties are waived if the warrantor can show that the problem associated with a warranted consumer product was caused by damage while in the possession of the consumer, or by unreasonable use, including a failure to provide reasonable and necessary maintenance."
Basically the only time Samsung can legally deny warranty service is if they prove rooting caused the malfunction. /thread