Sim not working in rog phone 5

[Winter_Soldier]

Please tell us some basic information before asking for help:
Model Name: Rog phone 5
Firmware Version: 18.0840.2201.226
Rooted or not: not
Frequency of Occurrence: always
APP Name & APP Version (If your issue relates to the app):
In addition to information above, please also provide as much details as you can, e.g., using scenario, what troubleshooting you've already done, screenshot, etc.
======================================== sim card not working it shows no service in both the sim slots. When I use the sim in different phone it works fine. After the motherboard replacement i faced this issue and I took to service centre they did something It worked for some time now for past 2 months no service, sim not working.

[FunBike31]

This a frequent failure on Rog 5, you're not talking about the fingerprint reader, does it work?
In any case, you are good to return to the service center, I advise you to act quickly, the end of the warranty should not be very far for the first rog 5 marketed.

[ARP_ASUS]

Hi Winter Soldier,
Can you please visit the service center again and confirm.
Let me know if you face any challenges post that.