Neither iPhone 18 Pro Max nor 16 Pro Max Is a HomeKit Hub

As of Aug. 25, 2026, the answer is simple: neither the iPhone 18 Pro Max nor the iPhone 16 Pro Max is a HomeKit home hub. Apple’s supported home hubs are HomePod mini, HomePod 2nd generation, and Apple TV 4K 2nd or 3rd generation; an iPhone is not on that list, and iPad is no longer supported as a home hub on the newer Apple Home architecture.[1]

That does not make the phone irrelevant. Since iOS 18, an iPhone can add and locally control Matter accessories without a home hub in some cases, and Thread-enabled iPhones can locally pair and manage Matter-over-Thread accessories under Apple’s stated limits.[2] The mistake is treating that local Matter control as the same job as the always-on home hub. It is not.

The four roles people keep mixing up

Before comparing the iPhone 18 Pro Max with the iPhone 16 Pro Max, it helps to separate the jobs Apple Home is asking different devices to do. The same device can hold more than one role, but the roles are not interchangeable.

The important word in Apple’s newer Matter support is “locally.” A phone that can add a Matter-over-Wi‑Fi accessory, or directly pair certain Matter-over-Thread accessories, is useful when you are standing there with the phone. It is still not the device that stays home, answers when you are away, runs automations between devices, or keeps shared home services alive.

If you want the adjacent deep dive, see why no iPhone is a home hub. For the narrower radio question, the dedicated iPhone 18 Pro Max Thread radio status page is the one to recheck after Apple publishes final specs.

What changes if you upgrade from iPhone 16 Pro Max to iPhone 18 Pro Max?

For Apple Home infrastructure, nothing meaningful changes. The iPhone 16 Pro Max is confirmed to include Thread, Wi‑Fi 7, Bluetooth 5.3, second-generation Ultra Wideband, the A18 Pro chip, 8GB of RAM, and a 4,685 mAh battery in Apple’s technical specifications.[4] Those specs make it a capable current iPhone, and the Thread line matters for direct Matter-over-Thread pairing. None of those specs turn it into a home hub.

The iPhone 18 Pro Max is a different kind of column because it is unreleased as of this article’s date. Pre-launch databases and rumor roundups point to an A20 Pro chip, 12GB of RAM, Bluetooth 6.0, and battery figures that may split by market: 5,391 mAh for a China / Nano-SIM model and 5,567 mAh for a US / eSIM model.[5][6][7] Those are not Apple specifications yet. More importantly, even if every one of them ships exactly that way, they still do not change the Apple Home hub rule.

This is the point where phone comparison charts can become actively unhelpful. A faster chip may make apps feel better. More RAM may help general multitasking. A larger battery may be welcome for a heavy phone user. But Apple Home does not hand hub duty to the device with the newest processor or the largest battery. The hub is a role Apple assigns to always-on home devices, not to the flagship you take to work.

Why “adds Matter accessories” is not the same as “is the hub”

Apple’s iOS 18 Matter change was a real improvement. A household should not have to buy a speaker just to perform every basic Matter pairing action. Apple says iOS 18 or later can add and locally control Matter-over-Wi‑Fi accessories without a home hub, and Thread-enabled iPhones can locally pair and manage Matter-over-Thread accessories. Apple also notes that mains-powered Thread devices are supported first, while support for battery-powered Thread devices depends on manufacturer firmware.[2]

That is a cleaner setup path, not a replacement home architecture. If the iPhone is in your pocket at a restaurant, on a train, or simply out of battery, it is not sitting at home as the persistent bridge for the rest of the household. A HomePod mini or Apple TV is boring in exactly the way a home hub should be: plugged in, present, and available when nobody is holding a phone.

The Verge’s coverage of Apple’s iOS 18 Matter change made the same practical distinction: hub-free Matter pairing expanded what an iPhone can do locally, while full Apple Home features still depend on having a home hub.[8] HomeKit News reached the same kind of boundary in its iOS 18 hub-free discussion, noting that users without a hub should not expect the full set of Apple Home features such as device automations, remote access, notifications, HomeKit Secure Video, or home sharing.[9]

Why an iPhone with Thread is not your home’s Thread border router

Thread is the other phrase that tempts people into buying the wrong thing. The iPhone 16 Pro Max has Thread listed in Apple’s tech specs.[4] Apple’s own Matter support language also covers Thread-enabled iPhones from the iPhone 15 Pro and iPhone 15 Pro Max or later.[2] That is enough to call the 16 Pro Max a confirmed direct Thread-capable iPhone.

The iPhone 18 Pro Max is more delicate. It is reasonable to expect Thread because Apple has already put Thread into recent Pro iPhones, and later reports described Thread and UWB expanding across the iPhone 17 lineup.[10][11] Still, “expected” is not a compatibility guarantee. Until Apple publishes the iPhone 18 Pro Max technical specifications, its Thread status belongs in the expected-rumored column.

Even with Thread, the phone is not the same thing as a Thread border router. Apple’s support page for “Thread Border Router Required” and “Needs Thread Network” alerts tells users to address the missing Thread border-router requirement; it does not present the iPhone as the household’s border router.[3] AppleInsider’s report on iOS 18 described Apple’s move as direct Thread control for smart-home devices, which is the right size for the feature.[12]

There are good reasons to like the phone radio anyway. Apple later framed the iPhone Thread radio around narrower benefits, including keeping certain local interactions possible when other home infrastructure is unavailable.[13] That can matter with something like a compatible lock during a power outage. It still does not make the phone the home-wide routing device for every Thread accessory in the house.

The rumored iPhone 18 Pro Max specs do not move the Apple Home answer

The table is intentionally lopsided. The iPhone 18 Pro Max may well be the stronger phone when it ships. That is a different buying question. For the question here — “will it change my HomeKit smart home hub situation compared with my iPhone 16 Pro Max?” — the upgrade buys zero confirmed Apple Home infrastructure capability.

What you should buy or keep instead

If the goal is Apple Home reliability, keep the iPhone 16 Pro Max and spend the smart-home money on a real hub: HomePod mini, HomePod 2nd generation, or Apple TV 4K 2nd or 3rd generation. Those are the devices Apple names for the hub role.[1]

If you already own one of those devices and it is enrolled in your Home, the iPhone 18 Pro Max does not add another layer of hub capability. If you do not own one, the 18 Pro Max does not remove the need. The better pre-purchase test is not “which iPhone is newer?” but “which device will be plugged in at home when the automation needs to run?”

For upgrade-specific carryover questions, use the iPhone 18 Pro Max HomeKit upgrade guide. If you are setting up a hub-free Matter accessory on a compatible iPhone, the practical setup path belongs in a recipe, not in this compatibility verdict; start with the iPhone 18 Pro HomeKit setup page after the phone launches.

Two bits of timing context

Apple’s older Home architecture cutoff is another reason not to plan around obsolete hub assumptions. MacRumors reported Apple reminders around a pending Home app upgrade requirement with a Feb. 10, 2026 deadline, and Apple’s current support language already excludes iPad as a home hub on the newer architecture.[1][14]

There are also rumors of a dedicated Apple home hub or home-display product, with MacRumors coverage pointing to a possible launch window from October 2026 into early 2027 and a rumored price around $350.[15][16] Treat that as future context, not a reason to turn an unreleased iPhone into a hub on paper. If your automations, remote access, notifications, HomeKit Secure Video, or shared home access matter now, the supported answer remains HomePod or Apple TV.

References

1. If you see a "Software Update Required" or a "Home Hub Required" error message - Apple Support
2. Pair and manage your Matter accessories - Apple Support
3. If you see a "Thread Border Router Required" or "Needs Thread Network" alert - Apple Support
4. iPhone 16 Pro Max - Tech Specs - Apple Support
5. Apple iPhone 18 Pro Max - Full phone specifications - GSMArena
6. Compare Apple iPhone 18 Pro Max vs. Apple iPhone 16 Pro Max - GSMArena
7. iPhone 18 Pro: Everything We Know - MacRumors
8. Apple now lets you add Matter devices to Apple Home without a hub - The Verge
9. Does iOS18 Offer a Hub-Free Option to Apple Home Users? - Homekit News and Reviews
10. iPhone 17 Lineup Features Apple's Custom N1 Wi-Fi 7 and Bluetooth 6 Chip - MacRumors
11. Apple adds Thread and UWB to entire iPhone 17 lineup, ready for Matter and Aliro - Matter Alpha
12. Apple enables Thread control for smart home devices in iOS 18 - AppleInsider
13. Apple reveals the two benefits of your iPhone's new(ish) Thread radio - 9to5Mac
14. Apple Reminding Users of Pending Home App Upgrade Requirement - MacRumors
15. Apple's 2026 Smart Home Lineup: New Apple TV, HomePod, and Home Hub - MacRumors
16. All-New Apple Home Hub Reportedly Launching as Soon as October - MacRumors