The LG V20 has been called by some one of the best flagship smartphones of 2016. But an issue that some have been facing is that the LG V20 won’t rotate and gyro or accelerometer has stopped working. This issue is happening when the screen rotation is activated and turned on. This means that the LG V20 screen doesn’t rotate even on the Internet page and is stuck in the vertical and won’t go horizontal when the camera is moved.
Other common issues that have been facing the LG V20 is that the default camera is showing everything upside down (ie, inverted) also all the LG V20 buttons are upside down. If none of the methods below work, there could be a software bug problem with the current software and it’s suggested to update the LG V20 to the latest software.
There can be two ways to fix the LG V20 screen rotation problem, the first recommendation is to hard reset  the LG V20.
An effective method to check if the phone’s gyroscope or accelerometer is functioning by doing a self-test. This will help to see what the real issue is when the LG V20 screen won’t rotate. You can do this by pressing the code “*#0*#” (without the quotation marks) on the LG V20 dial pad. Once you are in the service mode screen, tap on “sensors” and do a self test.
If your wireless carrier disabled the option to access the service screen, then your only recourse here is to reset the phone to its factory defaults . To learn how to factory reset the LG V20, read this guide . It’s also recommended to check this issue with your service provider first though as they may know by now that the problem exists and have some solution for you.
Another out-of-the-box tip from some that we don’t suggested doing is hitting the LG V20 with the back of your hand to give your phone a gentle jolt. If you want to take the risk, you may want to do that, just be careful
Again, the most recommended way to fix when the LG V20 screen wont rotate is to complete a hard reset. It’s important to note that doing a LG V20 hard reset, this process will remove and delete all data, apps, and settings. You should back up your LG V20 to prevent any data from being lost. The way to back up data on your LG V20 is by going to Settings > Backup & reset. You can learn how to perform a hard reset on the LG V20 with this guide, here .