Apple India — iphone x - receiver or earpiece or top speaker not working in brand new phone

Address: New Delhi, Delhi, 110007

Apple case id: [protected]
Recently i just bought iphone x 64gb silver color but from the very first day it has been giving a very serious problem. The receivor or earpiece stops working during calls. Regarding the same problem i have conacted apple no. Of times but even they are failed to provide any solution. I regret buying the crappiest iphone x. Pl dnt buy any apple product.