I have been using A51, within 1.5 years, the motherboard crashed for no reason, Service center told me for the replacement of motherboard which will cost around ₹ 9000 , I regret making decision to buy Samsung phone. when I enquired, I came to know mostly all phones in A series are facing this issue. No idea why Samsung is using such cheap tactics for cost cutting and disappointing the customers. If anyone else is facing this issue, please don't replace the motherboard instead buy a good smartphone from other brands, as even after replacement the validity will only be for next 3 months. So don't waste your ₹ 9000.
Samsung just doesn't want to resolve or look into this. Its clearly their mistake which occurs right after an update (and will not able to downgrade to an older version even from service centre). The only solution is to replace the motherboard according samsung.
Never choose samsung again.
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Samsung Customer Support
Am using Samsung A51 from the date of purchase with in 11 months black screen display problem changed in service center (Rs.7000),within a 6month handset start to hang in Samsung logo and keep on rebooting, when i approached Samsung care service they informed me mother board gone have to change it replacement cost is (Rs.8000) ,with in two years i have to spend 15,000 for not worthy model of Samsung A51,purchased for 30,000 and spending 15,000 to work properly, we trusted Samsung product now a days it turns upside down as not trustable product.