Samsung Authorized Service Centre — Complain about motherboard of my phone

Address:

[email protected]

Dear sir,

Few months ago i purchase samsung m30s (6gb/128gb) online from amazon. One day my phone skip from my hand and display mirror broken from right down corner, after that my phone is working good same as before this incident, after one month i reach care centre and submit my phone to them for reparing. On 25.09.2020 i changed full display from samsung authorized service centre kathua. When i take my phone back my handset can't bring network (I. E handset have network issue). It's means my motherboard is changed with other mobile because when i submit my handset it has no network issue. My phone is under warranty so pls solve my problem.

Thanks
Regards
Bharat bhushan