What version of Android is this? When I install an apk I only get a single confirm / cancel popup. Also, as a sibling comment pointed out, there are third part

What version of Android is this? When I install an apk I only get a single confirm / cancel popup. Also, as a sibling comment pointed out, there are third party app stores with all the comfort of the Play store (and far less adware): https://f-droid.org/ https://f-droid.org/