Fix For Unable To Change 24 Hour Clock On Oneplus Phone S Lock Screen

If you cannot change the 24-hour clock on the lock screen of your OnePlus phone after the Android 11 update, then you are not alone. Many OnePlus 8/8 Pro/8T/7T and OnePlus Nord users report about it. It seems that the issue is due to a bug in the OnePlus OxygenOS 11 builds and easy to fix. Here is a workaround to fix the wrong time format (24-hour clock even in 12-hour AM/PM mode) on the OnePlus phone.

Steps to Fix Lock Screen Wrong Time Format Issue on OnePlus Phone

If the above method does not help you to fix the time format issue on your OnePlus phone, then you need to wait for a new firmware update with the bug fix. More Resources:

How to Disable Call Record Warning on OnePlus 9 Series and NordUse YouTube at 120Hz on OnePlus 8 Pro and 8THow to Set Refresh Rate for Individual Apps on OnePlus 7, 8, and NordHow to Use OnePlus 8 Series Phones as a Range Extender