If you own an iPhone, picking a smartwatch looks easy. Buy an Apple Watch and move on. But plenty of people do not want to charge a watch every night, do not want to spend $399 or more, or simply like the look of something else. The catch is that Apple locks down what other watches can do on iOS, and the marketing pages rarely tell you where the gaps are.
Short answer: The best smartwatch for iPhone is the Apple Watch Series 12 at $399. It is the only watch that can reply to texts, answer calls and use every iOS feature. If you want a cheaper option, get the Apple Watch SE 3 at $249. If battery life matters more than replies, the Garmin Venu 4 lasts up to 12 days and works with iPhone, but it cannot send replies from the wrist.
What “works with iPhone” really means
Almost every smartwatch can show iPhone notifications. That part is easy. The hard part is everything after the buzz: replying to a message, accepting a call from the wrist, controlling music, using voice assistants and getting reliable background syncing. Apple keeps most of those abilities for the Apple Watch.
Two groups of watches also fail the test before you even start. Google has confirmed the Pixel Watch does not support iOS, and Samsung’s Galaxy Watch line has the same problem, so neither is an option for iPhone owners. If you are curious how those watches fit into the picture, our guide to the best Android smartwatches covers them in detail.
Good to know: Apple added a Notification Forwarding feature for third-party watches, but coverage we found says it is only available to iPhone users in the European Union, first in iOS 26.3 and expanded in iOS 26.5. If you live in the US, expect non-Apple watches to show notifications without letting you reply to them.
Best smartwatches for iPhone at a glance
| Watch | Best for | US price | Reply to texts on iPhone? |
|---|---|---|---|
| Apple Watch Series 12 | Best overall | $399 | Yes |
| Apple Watch SE 3 | Best on a budget | $249 (launch price) | Yes |
| Apple Watch Ultra 4 | Best for outdoors and battery | $799 | Yes |
| Garmin Venu 4 | Best non-Apple pick | $549.99 | No, notifications only |
| Amazfit Balance 2 | Best value alternative | Check retailer | Only in the EU |
Prices are US list prices from launch coverage and our own reporting. They move around during sales, so check the retailer before you buy.
1. Apple Watch Series 12: best overall
For most iPhone owners, this is the answer. It starts at $399, the same price as last year, and it does everything the iPhone can offer a watch. You can reply to messages by voice or quick reply, take calls on your wrist, unlock your Mac, use Apple Pay and share health data with the Health app without any workarounds.
The weak spot is battery life. Apple rates its standard watches at around a day, and real-world results in reviews of the previous generation ran somewhere between 27 and 32 hours. That is fine if you charge it while you shower, and annoying if you want to track sleep every night. If that sounds like you, see our breakdown of Apple Watch alternatives before you decide.
2. Apple Watch SE 3: best on a budget
The SE 3 launched at $249 and keeps most of what makes an Apple Watch worth having: notifications, replies, fall detection, workout tracking and the same app store. Apple rates its battery at 18 hours, and it supports fast charging, which gives you about 8 hours of use from a 15 minute top-up according to Tom’s Guide.
You give up some of the newer health sensors found on the Series line. For a first smartwatch, a gift, or a teenager’s wrist, it is the easiest way to get the full iPhone experience for the least money.
3. Apple Watch Ultra 4: best for outdoors and battery
At $799, the Ultra 4 is expensive, but it fixes the biggest complaint about Apple’s watches. The previous Ultra 3 was rated for 42 hours of normal use, and testers reported 45 to 49 hours in real life. That means a charge every two days instead of every night. The bigger case and tougher build also suit hikers, divers and runners who want one watch for everything.
It is overkill if you mostly check messages and count steps. Buy it if you spend long days outside or hate daily charging and still want full iPhone support.
4. Garmin Venu 4: best non-Apple option
If you want a smartwatch for iPhone that does not look or charge like an Apple Watch, the Garmin Venu 4 is the strongest pick. It launched at $549.99 and Garmin quotes up to 12 days of battery life in smartwatch mode. The AMOLED screen is bright, the workout tracking is deep, and there is even a built-in flashlight.
The trade-off is iOS itself. On an iPhone, Garmin watches show notifications, but Apple does not let them send replies, so you will read messages on your wrist and answer on your phone. Garmin also has no real app ecosystem compared to Apple. If fitness is the reason you want a watch, our roundup of the best Garmin smartwatch models shows cheaper and more rugged options in the same family.
5. Amazfit Balance 2: best value alternative
Amazfit makes some of the cheapest full-featured watches that connect to an iPhone. The Balance line has a bright screen, long battery life and a lot of health features for the money. Amazfit was also quicker than Garmin to announce support for Apple’s Notification Forwarding, which can enable replies from the wrist, but that only applies to iPhone users in the EU for now.
For US buyers, treat it like the Garmin: a good fitness watch that shows notifications, not a true Apple Watch replacement. Pricing changes often, so compare retailers before you order.
What each watch can and cannot do on iPhone
| Feature | Apple Watch | Garmin and Amazfit | Pixel and Galaxy Watch |
|---|---|---|---|
| Pairs with iPhone | Yes | Yes | No |
| See notifications | Yes | Yes | Not supported |
| Reply to messages | Yes | No in the US, EU only for some | Not supported |
| Health data in Apple Health | Native | Through the maker’s app | Not supported |
| Typical charging rhythm | Daily to every 2 days | Weekly or longer | Not applicable |
The chart shows why people look beyond Apple. A Garmin can go ten times longer between charges. The price you pay is the missing reply feature and a smaller set of apps.
How to choose the right one
- You text a lot from your wrist. Buy an Apple Watch. Nothing else can reply on a US iPhone.
- You hate charging every night. Look at the Ultra 4 or a Garmin, and accept the trade-off that comes with each.
- You want the cheapest working option. The SE 3 is the most affordable way to get full iPhone support.
- You train seriously. A Garmin has deeper training data and far better battery life, as long as you are fine answering messages on your phone.
- You want cellular. Only Apple’s cellular models make calls and texts without the phone nearby. Check our guide to smartwatch data plan costs before you add a line.
Frequently asked questions
Can I use a non-Apple smartwatch with an iPhone?
Yes, but with limits. Garmin, Amazfit and Huawei watches pair with iPhones and show notifications. They cannot reply to messages in the US, and some features need the watch maker’s app running in the background.
Does the Samsung Galaxy Watch work with iPhone?
No. Galaxy Watches need an Android phone, and the Pixel Watch does not support iOS either.
Which smartwatch has the best battery life for iPhone?
The Garmin Venu 4 is rated for up to 12 days in smartwatch mode. Among Apple watches, the Ultra line lasts longest at roughly a day and a half to two days.
Is the Apple Watch SE 3 good enough?
For most people, yes. It handles notifications, replies, workouts and fall detection for $249 at launch. You only miss out on a few of the premium sensors found on the Series 12.
Final verdict
For an iPhone, the Apple Watch Series 12 is still the best smartwatch you can buy, because the iPhone treats it as a first-class citizen and treats everything else as a guest. The SE 3 is the sensible budget choice, and the Ultra 4 is the pick if you want better battery life without leaving Apple. Garmin’s Venu 4 is the best escape route if you value a week of battery over wrist replies. Decide which of those two things matters more to you, and the choice makes itself.
Sources and further reading
- Tom’s Guide: Apple Watch 11 vs Ultra 3 vs SE 3
- Wareable: Garmin Venu 4 review
- Android Central: Garmin Venu 4 vs Venu X1
- MacRumors: EU iPhone users get notification forwarding for third-party wearables in iOS 26.5
- The 5K Runner: Amazfit gets iOS Notification Forwarding first
- Android Central: Which Wear OS watches work with iPhone
About this article: GeekBlog covers U.S. technology news, AI, phones, smartwatches and gaming. Every story is written and checked under our Editorial Policy. Spotted a mistake or have a story tip? Contact our editors.
