User Agent: Mozilla/5.0 (X11; Linux i686) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/63.0.3239.84 Chrome/63.0.3239.84 Safari/537.36 Steps to reproduce: When installing Firefox(57) on android(6) I can't move the app onto the SDcard. (with ex: AppMgr III 4.32) Actual results: Storage on my device is limited and firefox takes a lot of storage (196MB w/o cache. it's the second biggest app after google play) Expected results: I propose to set the manifest attribute android:installLocation to "auto" https://developer.android.com/guide/topics/data/install-location.html

See bug 1387384 comment 5 for the reasons behind this. Additionally, if you're really using Android 6.0, and *not* Android 6.0.1, then moving Firefox to the external storage might break things anyway because of bug 1322029 comment 38.

@JanH thx for the link. how come I haven't fount it? Yup, it's 6.0.1 indeed...