Getting the game onto your phone via Uptodown is straightforward, but it differs slightly from the standard Play Store experience:
Since you are not using Google Play, you must allow installation from “Unknown Sources.”
On Uptodown, you will typically find version 2.10 (or older builds) of GTA: San Andreas. This is significant because:
GTA San Andreas is a battery hog. On a full charge, expect 2-3 hours of gameplay. Tips to extend: