While Apple fans around the world were getting used to price increases on their favorite brand’s devices, a detail leaked online concerning the most expensive configurations of iPhone 18 Pro. It’s about the type of memory inside the device. In addition to the smartphones themselves being noticeably more expensive, the 1 TB and 2 TB models will feature a slower type of flash memory than the lower configurations. Cupertino wants to reduce production costs to minimize expenses, since memory is in short supply. But there’s a positive side to this news: Apple won’t raise prices even higher, although they could have.
Apple is replacing faster TLC memory with slower QLC in iPhone 18 Pro
How TLC Memory Differs from QLC in Simple Terms
Inside the iPhone there is flash memory which, in simple terms, has a cell-based structure — like a honeycomb. This memory comes in different types, and they differ in how much data fits into one cell. TLC (three bits of data per cell) is a faster and more durable option. QLC (four bits per cell) is cheaper to produce but slower and generally less durable.
Previously, Apple always used three-bit TLC memory in iPhones. However, this year, according to supply chain sources, the company will replace it with the QLC standard. This will save a bit on production costs but will result in lower read and write speeds and a shorter drive lifespan.
TLC memory is generally better, but on a smartphone scale you won’t notice much difference
No, of course, in practice the difference in write speed between TLC and QLC isn’t always noticeable. It may show up when recording long videos, transferring large files, or installing heavy games. For regular messaging and photos, the difference is usually unnoticeable. However, the fact remains: Apple plans to give us worse quality for more money.
What Exactly Is Changing in the 1 TB and 2 TB iPhone 18 Pro Versions
According to an insider with the nickname Reptalica, the 256 GB and 512 GB versions use faster TLC memory from SK hynix, Kioxia, and SanDisk. So the lower and mid-range configurations, according to this leak, get the better type of memory.
Things are more complicated with the higher-end versions. In the 1 TB model, Apple will reportedly use mainly QLC memory from SK hynix, while faster TLC from Samsung will only appear as a rare alternative. According to the source, this is a hidden downgrade because QLC is slower and less stable during writing.
The situation is even more interesting with the 2 TB version. Here, according to the leak, QLC memory originally designed for servers is used, with random small file performance described as extremely weak. For comparison, the iPhone 17 Pro Max 2 TB version is built on TLC — exactly as you’d expect from the most premium configuration.
Why Apple Is Using QLC Instead of TLC in iPhone 18 Pro
The reason, according to the source, is simple — money. Flash memory prices are rising, and it was previously reported that the cost of memory in the 256 GB iPhone 18 Pro will increase to approximately $51 per module, compared to just $13 for a comparable iPhone 17 Pro version.
Meanwhile, the base iPhone 18 Pro and Pro Max are projected to cost $1,399 and $1,499 — approximately 151,000 ₽ and 162,000 ₽ in Russia respectively. Against this backdrop, the author sees no logical justification for the hidden downgrade other than Apple’s desire to maintain high margins.
The highest storage version now looks like a less attractive purchase
It’s worth keeping in mind that these are analyst price predictions, not Apple’s official pricing. This is also part of the rumor landscape, not established fact.
Is There a Real Difference Between TLC and QLC in iPhone 18 Pro
In short, here’s who this story really affects:
- Those aiming for the 1 TB or 2 TB version for maximum storage — they should wait for real speed tests after release
- Those who shoot a lot of high-quality video and frequently transfer large files directly on the phone
- Professionals for whom write stability matters more than storage capacity
And here’s who can breathe easy:
- Owners of 256 GB and 512 GB versions — according to this same leak, they’ll keep the faster memory
- Those who use their iPhone for social media, casual photography, messaging, and everyday tasks
Interestingly, such hidden compromises from Apple aren’t surfacing for the first time. There have been previous cases where marketing promised more than what was actually delivered.
Should You Buy an iPhone 18 Pro with QLC
It’s too early to panic: this is still a leak, not confirmed specifications. The real speed difference will only be shown by tests after release, and it’s quite possible that in typical usage scenarios it will be unnoticeable.
But the takeaway for buyers is simple. If you’re getting the top storage version, there’s now a reason to wait for independent speed tests rather than overpaying blindly. For the majority of users who are fine with 256 or 512 GB, this news changes nothing — they will reportedly get the faster memory type.
