My OnePlus 9 5G just got updated to Android 13 automatically. Unfortunately, this update mess up my phone because now my phone isn't working. I can't receive or send calls, signal bars goes on and off and never connects to 5G. Please, If anyone knows how to fix this let me know.
The joys of OnePlus. You’re hitting issues similar to what I went through with OP8. Forced upgrade caused my OP8 bluetooth to start to fail with my SUV. Sent back through T-Mobile for replacement. Replacement OP8 worked for a day .. until OP8 upgrade. I had to exchange it (upgrade) to S21 to have a useable device in my SUV. OnePlus dragged the issue out through 3 RMA’s as well, but would never fix the issue.
Userlevel 7
+15
Roll it back to Android 11 if available or Android 12 if Android 11 isn't available. The MSM Tool will completely wipe your device. Once you complete the setup, enable Developer Options and turn off automatic updates.
Even since OPPO took over control of OnePlus, the software experience took a nose dive for the worse.
I have the similar problem with signal that go on and off, but I do get connected to 5G. However, my worst problem is after updated my phone keep reboot itself and sometime in the loop of rebooting. I tried factory reset twice still having the same issues. So save yourself if you are thinking of performing factory reset in hope it will fix the issue(s).
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