I submitted my Samsung Galaxy Note 20 Ultra (Model: SM-N986BZNGINS) to the service center for a battery replacement due to quick discharge.
After the replacement, the service team told me that the motherboard/network pin was damaged and asked for a costly motherboard replacement. Since this issue never existed before, I refused the repair and took my device back with only the new battery installed.
Now, after the service, I am facing a new and serious issue:
Very low network signal / “No Service” most of the time
Problem started only after service
Service on 29 September
I already tried restart, software update, reset network settings, and even another SIM — nothing works
This clearly shows the issue occurred during the service handling process. My phone was perfectly fine (except battery) before I gave it to Samsung, and now it is nearly unusable for calls and data.
Samsung must take responsibility and provide a resolution without additional charges.
I trusted Samsung for quality service, but this experience is extremely disappointing. Please resolve this matter urgently.
As per your query, we would request you visit the service centre where your product was previously serviced. They will provide you with all the information in a better way after inspecting the device physically.
