Qualcomm-funded study shows that Apple's C1 modem is slower — but there's a catch

iPhone 16e review. — (Image credit: Tom's Guide / John Velasco)

Apple recently released the iPhone 16e, which includes the C1 modem, the first built in-house. However, it seems Qualcomm has commissioned Cellular Insights to compare the iPhone 16e's connection abilities to two Android phones to see which is best.

All three devices were placed in various real-world environments around New York while connected to T-Mobile’s sub-6GHz network. According to the report, the phones were all tested in near, far and mid-cell conditions in an attempt to get the most comprehensive results.

What was the end result?

Samsung Galaxy S25 vs the Galaxy S24 — (Image credit: Future)

The report found that the Android phones offered a 34.3% to 35.2% faster download speed than the iPhone 16e, while also featuring an 81.4% to 91% faster upload speed. Now, it should be noted that the report found that all three devices offered "somewhat comparable 5G performance under ideal, near-cell conditions, performance deltas became increasingly pronounced as signal conditions deteriorated."

The reason for this disparity is suggested to be due to Qualcomm modems supporting downlink carrier aggregation and uplink carrier aggregation features. If you've not heard of these terms, they're essentially techniques used in cellular networks that increase the bandwidth and data rates by combining multiple data channels.

The C1 modem also lacks mmWave 5G support, which is usually found in urban areas and offers the fastest speeds.

5G network — (Image credit: FTZtudio/Shutterstock)

It is important to take this with a healthy level of salt for several reasons. Firstly, this is a report commissioned by Qualcomm, so there's always a level of bias in the end report. Secondly, this test was only on a single network. Meanwhile, an Ookla comparison revealed that the iPhone 16e modem far exceeded the iPhone 16 on all networks.

Finally, and arguably more importantly, Qualcomm has been the leader in cellular modems for over a decade, so it knows how to get the most out of its hardware. As such, Apple's first modem managing to outperform it completely would be unlikely.

So, what do you take away from this comparison? The main takeaway is that T-Mobile users in areas with no or limited coverage would be much better served by owning one of the best Android phones. However, if you live in a city with better coverage, then you really won't notice the difference in 5G connection.

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Josh is a staff writer for Tom's Guide and is based in the UK. He has worked for several publications but now works primarily on mobile phones. Outside of phones, he has a passion for video games, novels, and Warhammer.

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