There are Android devices that work on platforms other than ARM, but the emulator seems to mimic them. To my knowledge, there are currently no fully supported (that is, "Google Experience") first-class devices that use a different processor architecture.
In theory, you donโt need to test an Android app that uses only the official APIs for the actual target ABI, unless you have the ndk code and the official ndk does not yet support targets without ARM.
In the case of x86, as a rule, it works faster than a virtual box (and comes with its own ndk)
Something else - mips or something else - at the moment it will probably be a custom hardware device, and testing will either be performed on the device itself, or on any other platform used to support the initial porting of the android for it.
As long as non-ARM targets are not fully official, such support will come from the port author or equipment vendor, and not from official Google tools.
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