❗️ Benchmarks show the 1TB iPhone 18 Pro Max becomes as slow as an SD card due to its QLC memory. The $600 cheaper 256GB model uses TLC and is way faster.

HOMOLAB found the 1TB's QLC storage falls from 3,000+ MB/s to an average of 79.4 MB/s once its caches fill, dipping to 1.1 MB/s at 60% full.

A 512GB iPhone 18 Pro with TLC beat it in every mixed read/write test, by up to 38%.