A mustsee when doing TF autographs! Testflight signed source quote list..

TF signature, the official name is testflight signature, is currently the most stable signature method. iostestflight signature is a distribution mode officially recognized by Apple. It has few distribution restrictions, the link will not be blocked, and can be installed on any Apple device. Moreover, users do not need to click trust when downloading, it is easy to operate and the user experience is very good.
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