It's not just that, reference counting is friendlier to non-uniform memory access, which is what you have on a system with swap and/or memory compression. In co

It's not just that, reference counting is friendlier to non-uniform memory access, which is what you have on a system with swap and/or memory compression. In compacting GC, the compacting part can help here, but the GC part doesn't. But people do use GC on their phones, insofar as they like to use web browsers.