Apple's C1 Modem Put Through New Speed Test Ahead of iPhone 17 Air

Ookla, the network intelligence company known for its Speedtest tool, today published the results of its second iPhone 16e cellular speed test.

Apple iPhone 16e C1 Feature
In short, Ookla found that the iPhone 16e with Apple's custom-designed C1 modem "performs similarly" to the standard iPhone 16 with Qualcomm's Snapdragon X71 modem in the "vast majority of markets" that it examined.

However, results sometimes varied considerably based on carrier and country.

Ookla said the median 5G download speed for the standard iPhone 16 on T-Mobile's network in the U.S. was 317 Mbps, compared to 252 Mbps on the iPhone 16e. However, on an unspecified Spanish network, it said the iPhone 16e achieved a median 5G download speed of 139 Mbps, topping the iPhone 16 at 110 Mbps.

All in all, Ookla said the iPhone 16e performs "comparatively" to the iPhone 16 for 5G connectivity, which reinforces its earlier March findings.

iPhone 16e users can rest assured that Apple's first 5G modem is no slouch, which is good news ahead of Apple's special event tomorrow, as the ultra-thin iPhone 17 Air is also expected to be equipped with the C1 modem.

Head to Ookla's website for the in-depth results.

Related Roundup: iPhone 16e
Tags: C1, Ookla
Buyer's Guide: iPhone 16e (Neutral)
Related Forum: iPhone

Popular Stories

Apple Wallet ID Illinois

Apple Plans to Expand iPhone Driver's Licenses to These 7 U.S. States

Wednesday December 24, 2025 8:40 am PST by
In select U.S. states, residents can add their driver's license or state ID to the Apple Wallet app on the iPhone and Apple Watch, and then use it to display proof of identity or age at select airports and businesses, and in select apps. The feature is currently available in 13 U.S. states and Puerto Rico, and it is expected to launch in at least seven more in the future. To set up the...
iPhone Top Left Hole Punch Face ID Feature Purple

iPhone 18 Pro Launching Next Year With These 12 New Features

Tuesday December 23, 2025 8:36 am PST by
While the iPhone 18 Pro and iPhone 18 Pro Max are not expected to launch for another nine months, there are already plenty of rumors about the devices. Below, we have recapped 12 features rumored for the iPhone 18 Pro models. The same overall design is expected, with 6.3-inch and 6.9-inch display sizes, and a "plateau" housing three rear cameras Under-screen Face ID Front camera in...
iOS 26

iOS 26.2 Adds These 8 New Features to Your iPhone

Monday December 22, 2025 8:47 am PST by
Earlier this month, Apple released iOS 26.2, following more than a month of beta testing. It is a big update, with many new features and changes for iPhones. iOS 26.2 adds a Liquid Glass slider for the Lock Screen's clock, offline lyrics in Apple Music, and more. Below, we have highlighted a total of eight new features. Liquid Glass Slider on Lock Screen A new slider in the Lock...
maxresdefault

10 Mac Apps Worth Trying in 2026

Wednesday December 24, 2025 9:27 am PST by
2026 is almost upon us, and a new year is a good time to try out some new apps. We've rounded up 10 excellent Mac apps that are worth checking out. Subscribe to the MacRumors YouTube channel for more videos. Alt-Tab (Free) - Alt-Tab brings a Windows-style alt + tab thumbnail preview option to the Mac. You can see a full window preview of open apps and app windows. One Thing (Free) -...
maxresdefault

Where's the New Apple TV?

Monday December 22, 2025 11:30 am PST by
Apple hasn't updated the Apple TV 4K since 2022, and 2025 was supposed to be the year that we got a refresh. There were rumors suggesting Apple would release the new Apple TV before the end of 2025, but it looks like that's not going to happen now. Subscribe to the MacRumors YouTube channel for more videos. Bloomberg's Mark Gurman said several times across 2024 and 2025 that Apple would...
Foldable iPhone 2023 Feature Iridescent Search

Samsung Developing 'Wide Fold' With iPhone Fold-Like Design Ahead of Apple's 2026 Launch

Tuesday December 23, 2025 11:55 am PST by
Samsung is working on a new foldable smartphone that's wider and shorter than the models that it's released before, according to Korean news site ETNews. The "Wide Fold" will compete with Apple's iPhone Fold that's set to launch in September 2026. Samsung's existing Galaxy Z Fold7 display is 6.5 inches when closed, and 8 inches when open, with a 21:9 aspect ratio when folded and a 20:18...
iOS 26

iOS 26.3 Brings AirPods-Like Pairing to Third-Party Devices in EU Under DMA

Monday December 22, 2025 3:20 pm PST by
The European Commission today praised the interoperability changes that Apple is introducing in iOS 26.3, once again crediting the Digital Markets Act (DMA) with bringing "new opportunities" to European users and developers. The Digital Markets Act requires Apple to provide third-party accessories with the same capabilities and access to device features that Apple's own products get. In iOS...
iphone fold 3d print

Have a 3D Printer? You Can Make Your Own iPhone Fold Dummy

Tuesday December 23, 2025 1:31 pm PST by
Apple is working on a foldable iPhone that's set to come out in September 2026, and rumors suggest that it will have a display that's around 5.4 inches when closed and 7.6 inches when open. Exact measurements vary based on rumors, but one 3D designer has created a mockup based on what we've heard so far. On MakerWorld, a user named Subsy has uploaded a 1:1 iPhone Fold replica (via Macworld), ...
iPhone SE Cosmopolitan Clean

Apple Discontinued These 25 Products This Year

Wednesday December 24, 2025 7:24 am PST by
With the end of 2025 near, the time has come to look back at the devices and accessories that Apple discontinued throughout the year. Most of the products that were discontinued this year were simply replaced by a new model with an updated chip. However, the iPhone SE line was entirely discontinued when the iPhone 16e launched, and the iPhone Plus line is being phased out. Below, we have...

Top Rated Comments

Cristim74 Avatar
16 weeks ago
Considering this is a 1st gen product it's a good achievement.
Looking forward to the C2 and C3 performance ...
Score: 27 Votes (Like | Disagree)
orev Avatar
16 weeks ago
Does it ever matter if a 5G modem is slightly faster than another? Other than marketing or bragging rights, nobody will notice in real world usage.

No doubt this is part of generating some hype around the launch tomorrow.
Score: 25 Votes (Like | Disagree)
CalMin Avatar
16 weeks ago
Truth is that these benchmark type tests don't matter to most people as long as their phone "just works". With cellular there are just so many variables e.g., phone, location, provider, signal strength, network conditions (congestion etc.) that sometimes my phone is fast, sometimes it's slow and I live with that when not on wifi.

What I hear from this is that Apple's modem is 'decent enough' in most situations such that it won't be a factor in my purchasing decision. For me - I just want to get email, texts, post on Macrumors, look at some Instagram, and FaceTime with friends when out of the house.

While this doesn't hold true for many folks who need optimal connectivity or who just want the very best - I expect that most consumers will be just fine with an Apple modem.

Now if this means that Apple doesn't have to pay Qualcomm tax then we should get cheaper phones right? Right Apple? Right...???
Score: 22 Votes (Like | Disagree)
ProbablyDylan Avatar
16 weeks ago
I wonder how many end users are drag racing cell modems and making their purchasing decisions based on that.
Score: 15 Votes (Like | Disagree)
jntdroid Avatar
16 weeks ago
Great, so they both perform well in strong signal areas. What's more important is how well it can perform in weak signal areas. I know that's hard to test, but that's the most important factor at the end of the day.
Score: 12 Votes (Like | Disagree)
justanotherdave Avatar
16 weeks ago

Is it made up drivel though if it's true that the X80 is noticeably faster than the X71? Those with a Galaxy S25 series phone can compare their speeds to a iPhone 16 series phone or a Galaxy S24 and see what the results are.
I guess. If you think that download speeds are the ONLY metric used to compare modems while ignoring the 100 other tests that cellular engineers perform.

People said 5G was supposed to be revolutionary. It barely made any difference to users over 4G/LTE. Mainly because your performance is dictated by the server sending you content and whatever load-balancing they do, not because of the speed of your modem.

It’s also why my 1Gbps Internet service didn’t make browsing or other activities any faster than my previous 250Mbps service. All it did was make very specific downloads (large files) faster. And even then it rarely ever hit full speed.
Score: 10 Votes (Like | Disagree)