The biggest bottleneck I've had on my android phone is the Operating System. Since even low-end android phones on the market today have more resources than the 3ds, theoretically any of them could run 3ds games equal or better than the original hardware. An emulator by comparison reserves your device's resources in an attempt to virtually recreate the original hardware. This enables you to use the full resources available on your device. Unlike an emulator, the compatibility layer used in programs like Wine and Cider translates the code of the program into code that the native operating system can understand. The 3ds is one of five handheld gaming consoles that use ARM SOCs, so theoretically a program like Wine or Cider can be created to enable other ARM based operating systems like Android to run 3ds games. There is a project that I was hoping to start once I learned a little more about programming. The official version on Google play and the Citra website, and the MMJ version, which can be downloaded from Github here: There are two versions of Citra for Android.

Working citra emulator for android