DEX bytecode is compiled to native code since Android 5, Android 7 introduced a multi-layer where it is intepreted only to get the first execution profile for the JIT, then the JIT gathers PGO data while executing, which will be used by AOT compiler when the device is idle, afterwards only the pure machine code binary executes until the next update, or loading code that wasn't touched by the JIT.

As of Android 10, PGO data files are uploaded into the store and shared across similar devices so that the AOT compilation with PGO can be done right away on installation.

Having bytecodes doesn't mean being interpreted.