What's the difference between 5G sub-6 GHz and mmWave on iPhone?

What is the significance of not having mmWave and only having sub-6 Ghz?


Thank you.


[Re-Titled by Moderator]

iPhone 13, iOS 18

Posted on Apr 17, 2025 12:34 PM

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Apr 21, 2025 11:57 AM in response to GummoMarx

Yes, 5G sub-6 is much slower than mmWave. The speed of 5G sub-6 is 100 to 700 Mbps whereas mmWave is currently maxing at about 2 Gbps. Its limit is about 10 Gbps but the implementation for those speeds could be a decade away.


The mmWave issue are still the same, limited range and limited penetration. This will need to be solved before large scale rollout will occur. Your provider may have a mmWave coverage map online or can provide one.

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Apr 21, 2025 10:59 AM in response to Jeff Donald

Thanks Jeff.


The new iPhone 16e does NOT have mmWave, although the iPhone 13 has both mmWave and sub-6 GHz.


This seems like a reason to NOT buy the 16e, especially if you are located away from major metro area, where often 5G is difficult to pickup (say 100. miles north of New York City) with my iPhone 13.


Thoughts?


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Apr 21, 2025 11:40 AM in response to Jeff Donald

Thanks Jeff.


The new iPhone 16e does NOT have mmWave, although the iPhone 13 has both mmWave and sub-6 GHz.


This seems like a reason to NOT buy the 16e, especially if you are located away from major metro area, where often 5G is difficult to pickup (say 100. miles north of New York City) with my iPhone 13.


Also, just read the following:

"mmWave's Role:

mmWave (millimeter wave) is a high-frequency spectrum that offers the potential for very fast 5G speeds, often exceeding 1 Gbps, according to Qualcomm.

iPhone 16e's Lack of mmWave:

The iPhone 16e's C1 modem does not support mmWave, meaning it cannot connect to this faster spectrum.

Impact:

This means the iPhone 16e will not experience the highest possible 5G speeds in areas where mmWave is deployed, according to TechRadar."


Is this true? "In areas where mmWave is not available or the network is congested, the C1 modem on the iPhone 16e provides comparable or even better connectivity and speeds than the iPhone 16, according to AppleInsider."


So, does this mean that 5G sub-6 GHz is slower than 5G mmWave but easier to connect via 5G? If so, this seems like a dilemma -- what to choose?


Thoughts?



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Apr 21, 2025 4:41 PM in response to GummoMarx

You welcome. If you’re looking for some future proofing, yes, I would not recommend the 16e. It’s meant to be a basic communication device and allow internet access for basic functions and access to basic digital assets (books, photos, movies, videos). But it’s not what I want to be using 5 or 6 years from now.

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What's the difference between 5G sub-6 GHz and mmWave on iPhone?

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