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The iPhone 15 Pro and its successors have revolutionised mobile video, spearheaded by the ability to shoot in ProRes. The downside? Colossal file sizes. A single minute of 4K ProRes video weighs several gigabytes and can fill up your smartphone's internal storage in record time. The solution? An external storage drive for your iPhone—more specifically, a magnetic SSD for iPhone.
This guide is here to help you choose the perfect external SSD for your creative ambitions. We'll break down the technical criteria that truly matter and present our selection of the best models to boost your mobile workflow.
Before you buy, let's review the key points that will make all the difference in the field.
To record in ProRes on an external SSD flawlessly, the drive's write speed is the number one criterion. The iPhone 15 Pro requires a sustained write speed of at least 220 MB/s. Therefore, prioritise a fast USB-C SSD with a USB 3.2 Gen 2 (10 Gbps) interface or, to be future-proof, Gen 2x2 (20 Gbps). These standards guarantee theoretical speeds well above what's needed for 4K at 60 fps and ensure you're ready for future formats, especially those that might arrive with an external drive for the iPhone 16.
In the field, ergonomics make all the difference. A standard SSD dangling from its cable is not only impractical but also a recipe for disaster. In contrast, a magnetic SSD for iPhone attaches directly to the back of the device (via MagSafe), creating a stable and seamlessly integrated setup. This is a decisive advantage for handheld shooting or when using a gimbal. If you opt for a non-magnetic model, you'll absolutely need to invest in a smartphone cage or rig with a dedicated mount.
The ideal capacity will obviously depend on your usage. For regular ProRes shoots, consider 1TB a comfortable minimum. A 2TB model will give you true peace of mind. Don't overlook durability. An SSD designed for mobile video must handle shocks and vibrations without skipping a beat. Some models feature drop-resistance certifications and protection against water and dust (IP rating)—a real bonus for outdoor shoots.
Here are a few options that cater to the different needs of iPhone content creators.
This model was designed from the ground up for Apple's mobile ecosystem. Its magnetic attachment makes it the ideal partner for the iPhone 15/16 Pro, rendering mounts and clamps unnecessary. Its cutting-edge performance is built for the most demanding workflows.
For videographers and creators on iPhone who want an all-in-one, ultra-high-performance, and perfectly integrated solution for intensive mobile use. It's the iPhone 15 Pro Max accessory of choice for pros.
SanDisk's Extreme line is the undisputed gold standard for rugged, portable storage. This SSD combines high speeds with an all-terrain design, ensuring your files are safe whether you're in the studio or on a mountaintop.
For adventurers and creators who work in challenging environments and need an external SSD for iPhone 15 Pro that's as tough as it is fast. It's also an excellent choice for those who juggle multiple devices (computer, console, smartphone).
This SSD is all about the capacity-to-price ratio. For those on a tighter budget, it offers a generous 2TB of storage in a featherlight package, while still providing sufficient speeds for most uses, from large file transfers to video work.
For iPhone users who primarily want a lot of space to archive their photos and videos, or for budding videographers looking for a reliable and affordable external storage for iPhone solution without needing ultimate performance.
Our selection focuses on models optimised for mobile use with the iPhone. If you're also looking for a storage solution for a desktop PC, a home console, or if you simply want to explore a wider range of capacities and form factors, the options are vast.
? Explore our full catalogue of computer hard drives and SSDs
Shooting in 4K ProRes generates massive files (about 6 GB per minute!). Using an external SSD allows you to record directly to it, without filling up your iPhone's internal storage. This frees up space on your phone and greatly simplifies transferring footage to a computer for editing.
No. To ensure smooth recording without any dropped frames, the SSD must provide a sustained write speed of at least 220 MB/s. Also, note that the USB-C cable is important too: it must be able to support high speeds (10 Gbps or more). Always choose SSDs and cables where compatibility is clearly stated.
Absolutely not. Magnetic SSDs are specifically designed for Apple's MagSafe ecosystem. Their magnets are calibrated to never interfere with the phone's internal components (compass, NFC chip, etc.). They provide a secure attachment with zero risk to your precious smartphone.
By the Joybuy editorial team