The phrase factors to a particular model of the YouTube software (model 19.16.39) probably sourced from a third-party repository often known as APKMirror. APKMirror is an internet site that provides APK recordsdata for Android functions, permitting customers to obtain and set up app variations that might not be obtainable by the official Google Play Retailer. This may embody older variations or variations tailor-made for particular gadgets.
Accessing software variations by different sources like APKMirror may be helpful for customers who require a specific model as a result of gadget compatibility points, function preferences, or to bypass geographical restrictions or staged rollouts of updates. Traditionally, such repositories have offered entry to software program iterations faraway from official distribution channels or these not but formally launched.