LG G8 - Mobile data not working + can't send texts or calls without WiFi

[Oileriffic]

So I recently got a replacement LG G8 shipped to me after my previous one stopped working. I removed the SIM card from my previous LG G8 and put it into my replacement LG G8. Ever since, I found that my mobile data does not work at least 80 - 90% of the time, as well as not being able to send or receive texts or calls unless I'm on WiFi. Any help or suggestions would be much appreciated. Thanks in advance.

[KAPABLE-K]

Hello @Oileriffic,

Do you have access to another phone that you can use to test the SIM card? You can try some of the suggestions from this article here it's for the ThinQ version but it should still apply.