So, Oxygen OS 11 didn't support 5G on my carrier out of the box. However, I managed to get it to work by replacing the carrier_policy.xml file with this tutorial:
It got wiped with every system update, but it's never been hard to reenable. However, with Oxygen OS 12, the procedure doesn't work at all because the Engineering Mode APK refuses to install. So, I'm stuck on 4G. Is there any other way to get to said file and replace it? Preferably without rooting the phone. Thanks in advance.
Hello, OnePlus didn't add 5G to the carrier policy on OnePlus 7 5G , OnePlus 8 Pro and OnePlus 8 . Here is the way to enable 5G on the phones mentioned...