Here you can download Offline English Quran, which works without internet connection. You can read, search, go any sura.ayat. Text version work well without net. Moreover, you do not need to download any app. Just access this Quran web app from you mobile or desktop browser. That’s it.
In order to play audio, you would need to be connected with internet. Otherwise, you do not need net connectivity.
Click here to visit Offline English Quran