According to the source, OnePlus has added region locking to the OnePlus 12 flagship smartphones for the Chinese market Gizmochina. According to him, region locking was introduced on OnePlus 12 devices in China after the global version of the smartphone went on sale earlier this month. A similar story happened with the OnePlus 11 series smartphones.
Regional lockdowns create problems for users outside of China who prefer to buy cheaper Chinese models. In particular, it is not possible to make calls with such devices when traveling to other countries.
Like last year, users can unlock the smartphone by entering a special code obtained from OnePlus Support. As Gizmochina noted, it is not yet clear whether the support team will unlock phones that were not purchased through official Chinese channels. If you want to save money when buying a OnePlus 12 smartphone in China, it is recommended that you check whether it has a region lock before making a decision, especially if you live outside of China.