Not able to connect to cell network
I have Samsung Galaxy S8+ that is not able to connect to the cell network. I tried different SIM cards and behavior is same. The phone is not blacklisted. The phone is the international version.
I was able to open the phone and checked for any loose connections, but everything looks fine. What part/board is responsible for connecting to cell network or is there specific cable that I should check?
Added: I am in Canada with cell provider - Fido. My phone worked OK for 11 months. I tried reseting networks and doing full factory reset, but that did not help. The phone is international version and Samsung Canada and Samsung USA said there is no warranty on it, so I need to repair it myself.
Based on videos posted on this website, I have no problems disassembling phone - I can follow video instructions, but I have no idea how inside of the phone works.. I already opened backcover of the phone.
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