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.





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 previously used MLC NAND flash 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.

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Posted in 2014 at 12:31PM, November 07

Apple's iMessage Delivery Problems Worsened by Server Glitch

iPhone owners switching from their iPhone to another device often encounter an issue with lost messages that are incorrectly delivered to their inactive iPhone, instead of their new phone. This issue is a long-standing problem that was recently made worse by a server glitch, claims Apple in a statement provided to Re/Code .





Apple's iMessage service allows iPhone owners to exchange messages using Apple's iMessage servers, instead of the carrier's text messaging network. The system relies on the accurate identification of the originating and recipient devices as iPhones. When this identification fails, the message delivery system falls apart.



The lost messages problem arises when an iPhone owner switches to another smartphone, such as an Android device, and keeps their existing number. In select cases, Apple's iMessage service continues to recognize the phone number as being attached to an iPhone, instead of the new Android device. This recognition mistake causes a problem with messaging as Apple's iMessaging servers will route the message as an iMessage instead of converting it to a standard text message.



Apple advises iPhone owners to turn off iMessage on their phone and uncheck the number in other iMessage-compatible devices attached their iCloud account before switching devices. This method doesn't always remove the phone number from Apple's iMessage server, forcing former iPhone owners to contact Apple to remove them from the iMessage system manually. A recent server glitch has disabled this manual removal, leaving Apple support representatives temporarily unable to fix this problem for some customers.

“We recently fixed a server-side iMessage bug which was causing an issue for some users, and we have an additional bug fix in a future software update,” Apple told Re/code in a statement. “For users still experiencing an issue, please contact AppleCare.”

Apple has not provided a time-frame for the release of this software update. Until a fix is in place, customers will have to contact AppleCare for further guidance on how to handle this troublesome issue.

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Posted in 2014 at 12:31PM, May 22