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TF signature, the full name is TestFlight signature, is an application testing and distribution platform officially launched by Apple. With TF listed on Apple, developers can distribute test versions of applications to specific user groups outside of the App Store, collect feedback, and optimize applications.

The official internal test mode is more stable than enterprise signature. Please install TestFlight first before using it.
The new official TestFlight distribution model eliminates the trouble of frequent corporate signature drops. Downloading applications no longer requires a trust certificate; application update information is pushed through official channels, making it faster and more convenient.
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