New Nano-SIM Standard Approved, 40% Smaller Than Micro-SIM

As noted by The Verge, the European Telecommunications Institute (ETSI) today announced it has adopted a standardized design for the next-generation "nano-SIM". The new design is 40% smaller than the current micro-SIM standard.

Today's SIM card designs take up a significant amount of space inside a mobile device. This space is more and more valuable in today's handsets which deliver an ever increasing number of features.

The fourth form factor (4FF) card will be 40% smaller than the current smallest SIM card design, at 12.3mm wide by 8.8mm high, and 0.67mm thick. It can be packaged and distributed in a way that is backwards compatible with existing SIM card designs. The new design will offer the same functionality as all current SIM cards.

The design selection was heavily contested, with a proposal from Apple being opposed by a number of other mobile phone manufacturers despite Apple having the support of many European carriers. As the selection process continued, Apple slightly tweaked its design while the opposing carriers made changes to their own proposal that brought their design much closer to Apple's.

apple nano sim
Prototype of Apple's proposed nano-SIM design inside outline of a mini-SIM card (Source: The Verge)

The Verge notes that by the time final selection was made the only difference in external design between the two proposals was a notch included in the side of the card proposed by the coalition of manufacturers opposing Apple. And with the ETSI yet to publish any other details on the approved design beyond overall measurements, it is not yet clear which design won out.

Unfortunately, both Apple's design and the more recent Motorola / RIM compromise design are exactly the same exterior dimensions — the only difference is that the update submitted by Apple's competitors includes an extra notch to enable so-called "push-push" mechanisms in SIM slots that wouldn't necessitate a tray. Until ETSI publishes the specs, we won't know which of the two was chosen.

The ETSI specifically refused to comment on which group's design was chosen, noting only that a collective decision by the industry yielded the final standard.

Update: IDG News Service reports that Apple's design was indeed the winning standard.

Apple has won a battle over the standard for a smaller SIM card, use of which would leave more room for other components in future phone designs. [...]

ETSI isn’t releasing any further details of the vote or the winning specification, only saying that the decision had been made, according to a spokesman at the standards organization. The proposer of the winning specification was identified by card maker Giesecke & Devrient, which had a representative on the committee.

Popular Stories

iPhone 17 Pro Dark Blue and Orange

iPhone 17 Release Date, Pre-Orders, and What to Expect

Thursday August 28, 2025 4:08 am PDT by
An iPhone 17 announcement is a dead cert for September 2025 – Apple has already sent out invites for an "Awe dropping" event on Tuesday, September 9 at the Apple Park campus in Cupertino, California. The timing follows Apple's trend of introducing new iPhone models annually in the fall. At the event, Apple is expected to unveil its new-generation iPhone 17, an all-new ultra-thin iPhone 17...
iPhone 17 Pro Iridescent Feature 2

iPhone 17 Pro Clear Case Leak Reveals Three Key Changes

Sunday August 31, 2025 1:26 pm PDT by
Apple is expected to unveil the iPhone 17 series on Tuesday, September 9, and last-minute rumors about the devices continue to surface. The latest info comes from a leaker known as Majin Bu, who has shared alleged images of Apple's Clear Case for the iPhone 17 Pro and Pro Max, or at least replicas. Image Credit: @MajinBuOfficial The images show three alleged changes compared to Apple's iP...
xiaomi apple ad india

Apple and Samsung Push Back Against Xiaomi's Bold India Ads

Friday August 29, 2025 4:54 am PDT by
Apple and Samsung have reportedly issued cease-and-desist notices to Xiaomi in India for an ad campaign that directly compares the rivals' devices to Xiaomi's products. The two companies have threatened the Chinese vendor with legal action, calling the ads "disparaging." Ads have appeared in local print media and on social media that take pot shots at the competitors' premium offerings. One...
iphone 16 pro ghost hand

iPhone 17 Pro: 5 Reasons Not to Upgrade This Year

Monday September 1, 2025 4:35 am PDT by
Apple will launch its new iPhone 17 series this month, and the iPhone 17 Pro models are expected to get a new design for the rear casing and the camera area. But more significant changes to the lineup are not expected until next year, when the iPhone 18 models arrive. If you're thinking of trading in your iPhone for this year's latest, consider the following features rumored to be coming to...
iOS 18 on iPhone Arrow Down

Apple Preparing iOS 18.7 for iPhones as iOS 26 Release Date Nears

Sunday August 31, 2025 4:35 pm PDT by
Apple is preparing to release iOS 18.7 for compatible iPhone models, according to evidence of the update in the MacRumors visitor logs. We expect iOS 18.7 to be released in September, alongside iOS 26. The update will likely include fixes for security vulnerabilities, but little else. iOS 18.7 will be one of the final updates ever released for the iPhone XS, iPhone XS Max, and iPhone XR,...

Top Rated Comments

sachamun Avatar
173 months ago
Try not to inhale when installing it.
Score: 67 Votes (Like | Disagree)
Oletros Avatar
173 months ago
You taking your SIM card out frequently?

I go frequently to France and Italy so I have 3 SIM's, this two and the Spanish one.

So yes, the smaller the SIM the easier is losing it
Score: 29 Votes (Like | Disagree)
roadbloc Avatar
173 months ago
Hooray! Another small item for me to lose.
Score: 28 Votes (Like | Disagree)
basesloaded190 Avatar
173 months ago
I go frequently to France and Italy so I have 3 SIM's, this two and the Spanish one.

So yes, the smaller the SIM the easier is losing it

I guess in Europe its a whole different ball game than in the states.
Score: 24 Votes (Like | Disagree)
basesloaded190 Avatar
173 months ago
Hooray! Another small item for me to lose.

You taking your SIM card out frequently?
Score: 23 Votes (Like | Disagree)
roadbloc Avatar
173 months ago
You taking your SIM card out frequently?

Of course. When I go abroad.
Score: 17 Votes (Like | Disagree)