iPhone 18’s 9GB RAM Bump Falls Short of Apple’s 12GB AI Bar

Apple’s base iPhone 18 and iPhone 18e will ship with 9GB of RAM, up from the 8GB inside today’s standard iPhone 17, according to analyst Ming-Chi Kuo. The figure is a smaller jump than earlier leaks had projected and it lands well below the 12GB Apple itself now requires for iOS 27’s most capable on-device AI.

The two lower-end phones are now expected to arrive in spring 2027 with Apple’s A20 chip on TSMC’s 2nm process, Kuo said in a post on Friday. The higher-end iPhone 18 Pro, iPhone 18 Pro Max and the foldable iPhone arriving this fall will keep their 12GB RAM.

The Numbers Behind the 9GB Bump

Kuo’s industry checks point to a specific die configuration for the A20 that adds one gigabyte to the standard iPhone 18’s memory budget. The lower-end models will move to 9GB DRAM arranged as 1.5GB across six dies, up from the 8GB (2GB across four dies) that ships in the current A19-powered iPhone 17 line. The premium A20 Pro chip, by contrast, stays at 12GB configured as 1.5GB across eight dies. That extra die in the Pro tier’s package is the entire reason its RAM total ends in 12 instead of 9.

Cult of Mac, which highlighted the update, frames the change as a smaller bump than earlier leaks had predicted. Multiple outlets had pointed to the base iPhone 18 jumping straight to 12GB of LPDDR5X memory, the same floor the iPhone 17 Pro already carries. Kuo’s revised figure trims that expectation by a quarter, and it lands three weeks after Apple’s WWDC 2026 keynote redefined what 12GB of RAM actually buys a phone.

Apple’s own framing has not been published, and Kuo’s figures are not official specifications. The analyst note nonetheless resets the conversation about what buyers of a non-Pro iPhone should expect next year.

Kuo’s revised number is the second notable memory shift tied to Apple’s AI ambitions in three weeks. Apple’s own hardware floor for the most powerful on-device AI in iOS 27 sits at 12GB, a fact that frames the entire 9GB choice at the lower end. The two numbers sit on opposite sides of Apple’s product split. Buyers will weigh whether a base iPhone 18 in 2027 still delivers enough memory headroom to feel current four years out, and Kuo’s post laying out the new die configuration gives the supply chain one concrete anchor for the rest of the year.

The Cost Wall Apple Is Hitting

The 9GB figure arrives against a backdrop of rising silicon costs that has already reshaped Apple’s pricing across other categories. Supply-chain reporting from January pegged the A20 chip at as much as $280 per unit, roughly 80% higher than the A19 generation. That cost premium has put Apple in the position of trading capacity for affordability on the phones it plans to sell to the largest pool of buyers. The RAM number is the visible end of that trade.

Kuo’s post fits a broader pattern of Apple trimming specs on the standard iPhone 18 to keep the device within reach. Weibo leaker Fixed Focus Digital reported earlier this year that Apple implemented manufacturing downgrades on the standard iPhone 18. That move brought the model closer to the iPhone 18e at the component level, with some parts reportedly interchangeable between the two devices. The DRAM choice reads as the latest data point in that cost-control push. A 1.5GB-by-six-die configuration uses fewer dies than the Pro’s eight-die package, which lowers both die cost and packaging complexity on the volume model.

Apple has not confirmed any of these component decisions. The cost backdrop is real and recent. Apple raised prices across its Mac and iPad lines on June 25 while leaving iPhone 17 pricing untouched. That move concentrated the price pressure on hardware lines where Apple can substitute silicon and storage choices more freely, and it set up the iPhone 18 conversation before the new phone even has a name on a slide.

The 12GB Floor Apple Set at WWDC 2026

The complication for the base iPhone 18 is that Apple itself raised the AI ceiling three weeks before Kuo’s note landed. At WWDC on June 8, Apple confirmed that its most powerful on-device AI model in iOS 27 requires 12GB of unified memory. That move locks the standard iPhone 17 out of the new Siri AI features running locally on the device. The same rule applies across iPad with M4 and later and Mac with M3 and later, each needing 12GB or more to run the top model.

Apple Intelligence used to require a minimum of 8GB of memory. The new floor is 12GB, and it is enforced uniformly across phones, tablets and Macs. Non-supported devices can still access many of the same features through Private Cloud Compute, with the trade-off that those features run slower than the on-device versions.

That places a 9GB base iPhone 18 in an awkward spot. It will outrun today’s 8GB iPhone 17 on memory bandwidth and on-die capacity, but it still falls below the 12GB bar for the most demanding Apple Intelligence workload. Buyers who want the full Siri AI experience on a phone they plan to hold for three or four years will likely need to step up to the iPhone 18 Pro or the iPhone 18 Pro Max, both of which keep 12GB. Kuo’s revised forecast suggests Apple is comfortable keeping that split, at least for now.

It is not yet clear whether Apple will redefine its AI ceiling to accommodate 9GB devices. The company’s WWDC 2026 keynote set 12GB as the threshold for the most capable on-device model, with no carve-out for lower-RAM tiers. Apple’s June 8 announcement of the next Siri AI framed the requirement as the new baseline for the whole device lineup.

iOS 27 will bring tighter system-level integration with Apple Intelligence. My latest industry checks suggest Apple’s lower-end 1H27 iPhones, powered by the A20 chip, will move to 9GB DRAM (1.5GB × 6 dies), up from 8GB (2GB × 4 dies) in the current A19 models, to keep the system running smoothly under AI workloads. The three new high-end 2H26 models powered by the A20 Pro chip (the foldable and two 18 Pro models) will remain unchanged at 12GB (1.5GB × 8 dies).

The post was published by analyst Ming-Chi Kuo on June 26, 2026. It also confirmed that the three new high-end 2H26 models stay at 12GB. The 12GB floor on the most demanding on-device AI was set by Apple itself, not Kuo.

What Else Is Changing in the Base iPhone 18

The RAM is one of several reported adjustments in the standard iPhone 18. A January supply-chain roundup points to the same 6.27-inch display size as the iPhone 17, with ProMotion and a 120Hz OLED panel. Apple has historically rounded that figure to 6.3 inches in its marketing.

Connectivity is also tipped for a generational shift. Reports suggest the iPhone 18 family will use Apple’s second-generation C2 modem, with support for faster mmWave 5G. The C2 is also expected to support Apple’s privacy-focused Limit Precise Location feature, which lets users reduce the location data shared with mobile carriers. Apple’s senior vice president of hardware technologies, Johny Srouji, called the original C1 modem “a platform for generations” in February 2025. That framing positions the C2 as the next step along that roadmap.

The Camera Control button is tipped for a simplification on the standard model. Apple is reportedly planning to drop capacitive touch support and rely on pressure sensing alone. Supply-chain reporting from August 2025 said the Camera Control button has not been as popular as Apple hoped, which is the stated reason for trimming its feature set. Under-display Face ID, by contrast, remains a Pro-only rumor for now, with the feature not expected on non-Pro iPhones until the iPhone 19, arriving in late 2027.

The Price Question Apple Hasn’t Answered

Apple has not priced the iPhone 18 lineup, but the signals around cost keep multiplying. Apple raised prices across its Mac and iPad lines on June 25, sparing iPhones for the moment. Apple’s Mac and iPad price hike on June 25 hit the Mac Mini M4 with a nearly 38% jump and the Apple TV 4K 128GB with a nearly 89% rise, with Apple’s stated reason the same memory and storage crunch that is reshaping the iPhone’s bill of materials.

Analyst forecasts for the iPhone 18 Pro have begun to cluster. J.P. Morgan’s iPhone 18 Pro analysis projects a $50 to $100 increase over the iPhone 17 Pro’s $1,099 starting price, a more conservative call than the $300 figures some earlier leaks had floated. The odds on iPhone 18 Pro above $1,100 climbed to 90% this week on Polymarket, up 43 percentage points, while Polymarket bettors put a 96% chance on an official launch at all. Bank of America raised its average selling price forecast by $100 for both the iPhone Pro and Pro Max, leaving estimates for the base iPhone and Air unchanged. Whether the standard iPhone 18 picks up a smaller or larger share of the increase is the open question, and with 9GB of RAM instead of 12GB and a slimmer feature set, Apple has more room to keep the standard model closer to its current $799 starting price. The spring 2027 launch window gives Apple roughly nine months to land that balance.

Frequently Asked Questions

When is the iPhone 18 coming out?

The standard iPhone 18 and iPhone 18e are now expected to arrive in spring 2027, with March or April as the most-cited window. The iPhone 18 Pro, iPhone 18 Pro Max and the foldable iPhone will land first, in fall 2026.

How much RAM will the iPhone 18 have?

Apple’s base iPhone 18 and iPhone 18e will ship with 9GB of RAM, configured as 1.5GB across six dies alongside the A20 chip. That is up from 8GB in the current standard iPhone 17, but still below the 12GB in the iPhone 17 Pro and the iPhone 18 Pro / Pro Max / Fold lineup.

Will the iPhone 18 run iOS 27’s most capable on-device AI?

The base iPhone 18 will fall short of the 12GB Apple requires for the most powerful on-device AI model in iOS 27. Buyers of the 18 or 18e can still run many of the same features through Private Cloud Compute, with a slower experience than the on-device path the Pro tier offers.

How much will the iPhone 18 cost?

Apple has not priced the iPhone 18. Bank of America raised its average selling price forecast by $100 for the iPhone Pro and Pro Max, Polymarket bettors put 90% odds on the iPhone 18 Pro launching above $1,100, and Apple’s Tim Cook has already told the Wall Street Journal that price increases are “unavoidable.” The standard iPhone 18’s price has not been forecast in the reporting to date.