Using an iPhone 12 in Dual SIM mode throttles the cellular data speed to 4G LTE, according to an Apple Sales FAQ shared with retailers and carriers.
All 5G iPhone 12 models support Dual SIM mode, which refers to the ability to switch between a SIM card and an eSIM operating on independent numbers and/or carriers. However, an image of a training document from Apple's Sales Web resources called "What you need to know about 5G on iPhone" and posted to Reddit suggests the iPhone 12 will not support 5G on either line when Dual SIM mode is active. The FAQ reads:
"Does 5G work with Dual SIM?" When using two lines in Dual SIM mode, 5G data isn't supported on either line and will fall back to 4G LTE. If customers are using eSIM only and are on a 5G-supported carrier and service plan, they'll have 5G access.
The document suggests that only by disabling one SIM or the other will 5G speeds be available – a limitation that, if confirmed, will come as a blow to iPhone 12 customers who intended to use separate work and personal lines, for example.
On the bright side, this incompatibility could be a software issue, and therefore something Apple could resolve down the line. Indeed, the Reddit user who posted the above image claims that an update coming later in 2020 will enable 5G when using a Dual SIM mode.
This information is allegedly revealed in Apple's internal training documents, but 5G is not anywhere mentioned in Apple's Dual SIM support page, which was last updated on September 26. We've reached out to Apple to clarify the matter and will update this article if we get a response.
(Thanks, De Paul Sunny!)
Update: MacRumors has received independent confirmation that the documentation is genuine.
Thursday January 16, 2025 6:45 am PST by Joe Rossignol
Apple today adjusted estimated trade-in values for select iPhone, iPad, Mac, and Apple Watch models in the U.S., according to its website.
Some values increased, while others decreased. The changes were not too significant, with most values rising or dropping by $5 to $50.
We have outlined some examples below:
Device
New Value
Old Value
iPhone 15 Pro Max
Up to $630
U ...
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While the so-called "iPhone 17 Air" is not expected to launch until September, there are already plenty of rumors about the "ultra-thin" device.
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Notification Summary Changes
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For...
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The report today added that Apple has also been holding discussions with Chase Bank owner JPMorgan since last year, so there are at least three potential companies in the running to take over the Apple Card from current partner Goldman Sachs.
Goldman...
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There is a good chance that Apple's first product announcement of 2025 will be updated 13-inch and 15-inch MacBook Air models with the M4 chip.
Last month, Apple released macOS Sequoia 15.2, and in doing so it accidentally confirmed new MacBook Air models are coming this year (unsurprisingly).
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While the iPhone 17 Pro and iPhone 17 Pro Max are not expected to launch until September, there are already plenty of rumors about the devices.
iPhone 17 Pro concept based on rumors
Below, we recap key changes rumored for the iPhone 17 Pro models as of January 2025:
More aluminum: iPhone 17 Pro models are rumored to have an aluminum frame, whereas the iPhone 15 Pro and iPhone 16 Pro models ...
The iPhone 17 lineup will feature a vapor chamber heatsink to improve thermal performance, according to a new report.
The news comes from Chinese tech news site MyDrivers, which claims that the entire iPhone 17 lineup, consisting of the iPhone 17, iPhone 17 Air, iPhone 17 Pro, and iPhone 17 Pro Max, will adopt the improved thermal heat spreader.
Vapor chamber technology is already used...
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2025 promises to be quite a big year for Apple, with the company rumored to be planning more than 20 product announcements this year.
Apple's rumored smart home hub will be its second all-new product to launch in as many years, following the Apple Vision Pro headset last year. And of course, we will get several new iPhone and Apple Watch models, like every year. Beyond that, Apple could...
That's pretty unacceptable if true, and if its unfixable is likely to be a deal breaker for a small but important minority of power users (myself included).
If this is anything more than just an initial software bug (AKA if this is a hardware limitation) I really have to question whether or not the iPhone 12 is ready for prime time.
Ok... show me show Sidney is blanketed in 5G... today
I assume you mean Sydney. Here is one of the 3 networks for this little village. Covers where i live, work, run, drink, gym, BJJ and where 99% of my friends live. Next?
Order is now cancelled, sticking with XS for another year. Disappointing because I was looking forward to some new tech, but since I don’t take many pictures, the iPhone 12 already felt like only a smalll update.
i would not be able to use 5G at all, because I use dual sim 24/7.
I am waiting for the next iPhone with hopefully real 5G (including international UW) support, 120hz and a smaller notch. That will feel much better
