Laggy phones and misleading benchmarks
TLDR: You can predict degree of unresponsiveness of a phone via random-write-4k benchmarks. I wish review websites would fill phones to 80-90% prior to running the benchmark, especially on smaller-capacity phones where users are more likely to run out of space.
SQLite vs Phone NAND
I’ve long held a theory that Android lag is almost directly determined by slowness induced by SQLite transactions. This weekend, while researching phones for a family member, I found some supporting evidence.