Recently, there have been reports indicating that Apple's freshly launched iPhone 18 Pro Max witnesses a substantial slump in storage speed when subjected to extreme, continuous large-scale data write operations. In certain test scenarios, the speeds have even dipped below 100MB/s. It's worth noting that the 1TB and 2TB variants of this model are equipped with QLC flash memory. When pitted against TLC flash memory, QLC lags behind in terms of both write speed and endurance. Specifically, it suffers a drastic drop in write speed once the cache is depleted. Nevertheless, for the vast majority of regular users, such demanding situations are scarcely, if ever, encountered during everyday usage.
