The latest Opera Mini, while still light, is optimized for Android 5.0 and above. If you are using a device running Android Gingerbread (2.3) or Jelly Bean (4.1), the new versions won't even install. Older versions (Opera Mini 7 or 8) were designed for phones with as little as 256MB of RAM.

: Select the desired version (e.g., Version 7.x, 8.x, or 20.x) from a trusted archive.

Before you tap the APK file, do two things: