Last modified: 2014-08-04 15:03:56 UTC
On my Android 4.2.1 tablet I have both Wikipedia 2.0 and Wikipedia 2.0-beta-2014-06-25. My tablet language is Hebrew. 2.0-beta-2014-06-25 shows UI in Hebrew. 2.0 shows UI in English. This may be related to Bug 62720.
Can you try the 2.0 apk from http://releases.wikimedia.org/mobile/android/wikipedia/stable/ and see if this issue exists there?