Please tell us some basic information before asking for help:
Model Name:ASUS ROG 5
Firmware Version::31.0810.1226.91
Rooted or 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.
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My phone sim is not detected now earlier it was WIFI
They Close that link now the issue with cellular not working link to earlier issue
https://zentalk.asus.com/en/discussion/comment/224291