Apple Said to Be Stopping Use of TLC NAND Flash in iPhone 6 and 6 Plus After Reported Issues - MacRumors
Skip to Content

Apple Said to Be Stopping Use of TLC NAND Flash in iPhone 6 and 6 Plus After Reported Issues

Apple will switch from using TLC (triple-level cell) NAND flash to MLC (multi-level cell) NAND flash in the iPhone 6 and iPhone 6 Plus after users have experienced crashing and boot loop issues with the higher capacity versions of both devices, reports BusinessKorea.

iphone6_6plus_laying_down
Sources have told the paper that flash memory firm Anobit, which Apple acquired in 2011, is to blame for the manufacturing defects. Apple will reportedly switch to MLC NAND flash for the 64GB iPhone 6 and the 128GB iPhone 6 Plus, and will also address crashing and boot loop issues with the release of iOS 8.1.1. Apple has used MLC NAND flash before, in previous-generation iPhones.

TLC NAND flash is a type of solid-state NAND flash memory that stores three bits of data per cell. It can store three times as much data as single-level cell (SLC) that stores one bit of data, and 1.5 times as much as multi-level cell (MLC) solid-state flash memory that stores two bits of data. On top of that, TLC flash is more affordable. However, it is also slower than SLC or MLC in reading and writing data.

Apple released its first iOS 8.1.1 beta to developers earlier this week, although the company did not specify whether the included bug fixes addressed boot loop and crashing issues on the iPhone 6 and iPhone 6 Plus. Users who are experiencing an unusual amount of boot loops and crashes with their iPhone 6 or iPhone 6 Plus are recommended to bring their devices back to an Apple Retail Store for a replacement.

Related Forum: iPhone

Popular Stories

iPhone Handoff iOS 27 Feature

T-Mobile to Charge $5 a Month for iOS 27 iPhone Handoff

Thursday September 10, 2026 3:58 pm PDT by
T-Mobile will charge customers $5 per month to use iPhone Handoff, an e-SIM feature that allows the same phone number to be used on two separate iPhones. iPhone Handoff requires carrier support, and at launch, only T-Mobile users in the U.S. and Deutsche Telekom users in Germany will be able to use it. T-Mobile says customers can use their number across two compatible iPhone models and...
iOS 27 Feature Dark

Apple Announces iOS 27 Release Date

Wednesday September 9, 2026 10:46 am PDT by
At its event today unveiling the iPhone 18 Pro, AirPods 5, Apple Watch Series 12, and more, Apple announced that iOS 27 will be released later this month. iOS 27 has already been available as a developer beta since June and as a public beta since July, and Apple today said that the update will be released for all users with a compatible iPhone model on Monday, September 14. iOS 27 is...
iphone duo

IMAX Reacts to iPhone Duo's 1:1.4 Aspect Ratio Displays

Friday September 11, 2026 4:42 am PDT by
Production theater company IMAX has responded in a mixed way to Apple's embrace of a 1:1.4 aspect ratio on the iPhone Duo's inner and outer displays. The boxier ratio happens to be very close to the classic "full-frame" IMAX 1.43:1 aspect ratio, which comes from the geometry of the company's original 15-perforation/70mm film system. In response to an X post from someone wondering if we'll see...

Top Rated Comments

155 months ago
Nandgate?

Score: 106 Votes (Like | Disagree)
RoelJuun Avatar
155 months ago
You should test your stuff first before using it in your products and sell said products for obscene prices.
Score: 90 Votes (Like | Disagree)
az431 Avatar
155 months ago
You should test your stuff first before using it in your products and sell said products for obscene prices.

Read the entire article before making baseless comments.
Score: 40 Votes (Like | Disagree)
Markiie Avatar
155 months ago
Take it back to the Apple Store and replace it with what? Another phone with the same kind of problems? I think a recall is in order here.......
Score: 40 Votes (Like | Disagree)
155 months ago
Read the entire article before making baseless comments.
But you don't understand. Any time anything goes wrong with an Apple product, it's because Apple didn't test it. They randomly pick products and say, "Skip the testing on this one. Just sell it." So for some reason, they explicitly picked the iPhones with TLC flash to not test.

Yep, that's how one of the richest companies in the world got to where they are today.

(just in case I laid it on too thick... /s)
Score: 36 Votes (Like | Disagree)
155 months ago
Nandgate?
Score: 34 Votes (Like | Disagree)