Safari is a web browser developed by Apple Inc. and is primarily designed to be used on their own devices such as Macs, iPhones, and iPads. On the other hand, UC Browser is a mobile web browser developed by UCWeb, a subsidiary of the Chinese multinational conglomerate, Alibaba Group.

The reason why Safari may be restricting you from opening UC Browser could be due to a number of reasons. One possible reason is that UC Browser may not be compatible with the version of Safari you are using. This is a common issue with web browsers where certain features and functionalities are only supported by specific versions of the browser. In such cases, it is recommended that you update your Safari browser to the latest version or use a different browser that is compatible with UC Browser.

Another possible reason why Safari may be restricting you from opening UC Browser is due to security concerns. In recent years, there have been several reports of privacy concerns related to UC Browser, including allegations of unauthorized data collection and transmission to remote servers. As a result, several countries, including India and the United States, have banned the use of UC Browser on government devices. Apple, being a company that places a high emphasis on privacy and security, may have implemented measures to restrict the use of potentially insecure applications like UC Browser on their devices.

Additionally, Apple has been known to restrict certain applications on their devices for various reasons, including legal issues and compatibility concerns. This is done to ensure that users have a seamless and secure experience when using their devices. While it may be frustrating to not be able to use your preferred browser, it is important to understand that these restrictions are put in place to protect the integrity and security of the device and the user's data.