Everything (and we mean everything) to know about 5G on the iPhone

If you’re in the market for a new iPhone and want to make sure you can take advantage of all the great features 5G offers, then it’s essential to make sure you get the right iPhone model. Fortunately, that’s not hard to do. However, it can still be confusing to know which models support “real” 5G’ and which ones will be left behind, especially when roaming across international boundaries.

The short answer to this quandary is that every iPhone released since the fall of 2020 supports at least some flavor of 5G. This includes the entirety of the iPhone 12, iPhone 13, and iPhone 14 families, plus the third-generation iPhone SE that came along in early 2022. That last entry also makes it a safe bet that, from now on, we’ll never see a new iPhone that’s not 5G-capable.

iPhone 13 Pro best 5G phone.Andy Boxall/Digital Trends

However, the longer answer is that there are some things you should watch out for when you’re looking to get an iPhone that’s compatible with your preferred 5G service.

Regional differences

As long you purchase your iPhone from an Apple Store or other legitimate retailer in your home country, you can be confident it supports the necessary 5G frequencies. That’s even more of a sure thing if you get one directly from your carrier.

Things can get a bit tricky if you buy an iPhone in one country for use in another. Whether you’re ordering a new iPhone abroad to save a few bucks, picking one up on vacation, or moving to a new country, you’ll need to ensure the iPhone you’re buying is fully compatible with your chosen carrier.

It may surprise you to discover that Apple makes 20 different variants of the iPhone 14 series to cover all the different 5G frequencies used around the world. That’s five each for the iPhone 14, iPhone 14 Plus, iPhone 14 Pro, and iPhone Pro Max.

The iPhone 13 lineup had 21 different variants, with five for each of the iPhone 13, iPhone 13 Pro, and iPhone 13 Pro Max, and six for the iPhone 13 Mini.

The iPhone 12 lineup comprised 17 different variations. However, Apple also added a fifth column last year, with a new version of each iPhone 13 model to ensure compatibility with 5G services in Armenia, Belarus, Kazakhstan, Kyrgyzstan, and Russia.

iPhone 12 MiniAndrew Martonik/Digital Trends

The good news is that this isn’t as complicated as it sounds. Long gone are the days when Apple sold different iPhones for Verizon, AT&T, and T-Mobile. Now, Apple sells only a single version of each iPhone in the U.S. that’s compatible with the 4G and 5G frequencies on all U.S. carriers.

However, a different version is sold in the rest of North America, including Canada, Guam, Puerto Rico, and the U.S. Virgin Islands. This version is also sold in Japan and, in the case of the iPhone 13 lineup, Mexico and Saudi Arabia.

The other worldwide variations are one specific to mainland China, Hong Kong, and Macao, the aforementioned iPhone 14 and iPhone 13 variant for some Eastern European countries, and a “global” version that covers the 5G services offered in the rest of the world.

The Chinese models of the iPhone 12 Mini and iPhone 13 Mini are split in two, with one version for mainland China and the other for Hong Kong and Macao. Another significant difference is that all iPhones sold in mainland China feature two physical SIM card slots instead of an eSIM. Except for the iPhone Mini and iPhone SE, this also applies to those sold in Hong Kong and Macao.

This shouldn’t be a problem for most folks, but you could get yourself in trouble if you’re planning on engaging in a bit of cross-border shopping. For example, popping up from Seattle to Vancouver might score you a better deal on an iPhone 14 or iPhone 13, but you’ll likely be getting the Canadian model, which will only be partially compatible with the 5G service offered by U.S. carriers. The same applies if you pick up an iPhone while traveling in Puerto Rico or Guam, which are typically the same models sold in Canada.

mmWave support

The key difference between North American iPhone models is support for the extremely high-frequency mmWave band. This is used widely by Verizon in major urban centers and by AT&T in congested areas like stadiums and airports. T-Mobile has also deployed it in a few densely populated areas, although it doesn’t talk about it nearly as much.

While this will likely change someday, mmWave-capable iPhone models are sold in the U.S. exclusively. Every iPhone 12, iPhone 13, and iPhone 14 sold in the U.S. supports mmWave, regardless of carrier. No iPhone made to be sold outside of the U.S. supports mmWave. Notably, the U.S. models support mmWave bands that are used exclusively in other countries, so Apple could eventually sell them elsewhere; it’s simply chosen not to do so, at least for now.

In practical terms, this means you can buy an iPhone from T-Mobile and use it on Verizon’s 5G Ultra Wideband network and get full mmWave speeds (assuming you’re within a block or so of a mmWave transceiver). However, if you pick up an iPhone in Toronto, you’ll be limited to the midrange C-band portion of Verizon’s network.

iPhone 13 Pro's smaller notch compared to the iPhone 12 Pro's larger notch.Andy Boxall/Digital Trends

Support for mmWave is the only difference between the iPhone 12, iPhone 13, and iPhone 14 models sold in the U.S. and those sold in Canada and the U.S. territories. So, an iPhone 14 purchased in Guam will work fine on low-band and mid-band 5G.

This is also less of an issue if you’re looking to pick up a 2022 iPhone SE. The iPhone SE doesn’t support mmWave at all, and therefore the same model is sold throughout North America. A 2022 iPhone SE purchased from an Apple Store in Montreal will be the same as what you’d get from an Apple Store in New York.

However, this won’t work quite as well if you want to pick up a new iPhone while traveling in Europe. Although a European iPhone 14 supports most of the same 5G frequencies used in the U.S., a couple of key bands are missing. For example, only North American iPhone models support the 600Mhz frequencies used by T-Mobile in more sparsely populated areas. For the curious, Apple offers a helpful list of supported 5G and LTE frequencies for each iPhone model sold in each country.

So, what’s the bottom line? Don’t buy an iPhone from another country unless you’re sure you know what you’re doing. If you’re emigrating to a country where different iPhone models are sold, be prepared to replace your iPhone if you want the best possible 5G coverage in your new home. Lastly, stick with the iPhone 12, iPhone 13, iPhone 14, and other flagship models if you want the fastest possible 5G speeds in densely populated areas, as the budget iPhone SE doesn’t offer mmWave support.

Can I add 5G to an older iPhone model?

Although AT&T did a brilliant job of muddying the waters with its 5GE stunt, no iPhone before the iPhone 12 supported 5G, and this isn’t something that can be added retroactively through a software update.

Cellular technologies are driven by hardware, specifically things like modem chips and antennas. This means a smartphone can’t support 5G unless it’s been designed for this from the ground up.

If you’re on AT&

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