S21 Ultra experiences occasional restarts during use.
S21 Ultra experiences occasional restarts during use.
I apologize for the delayed response. I initially visited Samsung, who informed me about a 5-week delay due to staff changes in my area. They suggested checking with a local technician, who charged $60 for a diagnosis and identified the issue as a faulty motherboard. The repair cost would have been about $1000, but Samsung extended my warranty at no charge after I found a replacement part. They ultimately attributed the problem to a manufacturing defect. I received a new motherboard and no further issues. Thank you for your suggestions and support.