iFixit confirms iPhone 4S has 512MB of RAM

Summary:Siri, do you might if we do a teardown?

iFixit's teardown of the iPhone 4S uncovers some interesting facts about Apple's iPhone 4S.

First thing we discover - as rumored, the iPhone 4S has 512MB of RAM. This has been confirmed by markings on the A5 processor:

The markings to look for are the E4E4, which means that the CPU is a two 2 Gb LPDDR2 die, and 4Gb translates into 512 MB.

Chipworks has a photo of the A5 processor die:

Other highlights from the teardown:

  • The battery has an extra 0.05WHrs compared to the iPhone 4!
  • Battery connectors are different, so it's unlikely that an iPhone 4 battery would fit in the 4S.
  • The 4S features the vibrator motor from the Verizon iPhone 4, a linear oscillating vibrator:

Note that the iFixit teardown is ongoing at the time of writing, so I'll update this post with any new information as it comes in.

Topics: Mobility, Hardware, iPhone, Processors, Smartphones


Adrian Kingsley-Hughes is an internationally published technology author who has devoted over a decade to helping users get the most from technology -- whether that be by learning to program, building a PC from a pile of parts, or helping them get the most from their new MP3 player or digital camera.Adrian has authored/co-authored technic... Full Bio

zdnet_core.socialButton.googleLabel Contact Disclosure

Kick off your day with ZDNet's daily email newsletter. It's the freshest tech news and opinion, served hot. Get it.

Related Stories

The best of ZDNet, delivered

You have been successfully signed up. To sign up for more newsletters or to manage your account, visit the Newsletter Subscription Center.
Subscription failed.