64K starts to be a little too wasteful. It is a small performance gain as you'd expect, but less granularity means significantly more wasted memory On a phone

64K starts to be a little too wasteful. It is a small performance gain as you'd expect, but less granularity means significantly more wasted memory On a phone with limited RAM, this starts to be a bad tradeoff quickly. 16K is a reasonable jump from the venerable 4K page size.