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By Joybuy Product Recommendation Officer, August 28, 2026
The iPhone 15 Pro and Pro Max have transformed mobile video production, especially with the ability to record directly in Apple ProRes. But this high quality comes at a cost: the internal storage is often full after just a few minutes. For many content creators, videographers, and tech enthusiasts, an external SSD is therefore no longer an option, but a necessity.
However, the selection is vast, and the market is full of technical promises that don't always hold up in practice. Before you make a decision, you should be aware of the most common pitfalls that lead to purchase mistakes.
To avoid these problems, you should focus on the technical parameters that are crucial for a smooth workflow with the iPhone 15 Pro.
Recording Apple ProRes in 4K at 60 frames per second requires a constant, high write speed. An SSD should be able to guarantee a sustained write performance of at least 220 MB/s to prevent frame drops. Look for an SSD with a USB 3.2 Gen 2 interface (10 Gbps). This speed is optimally matched to the capabilities of the iPhone 15 Pro. Models with USB 3.2 Gen 2x2 (20 Gbps) will also work, but cannot unleash their full performance on the iPhone.
For mobile recording, a compact and lightweight design is essential. A MagSafe SSD or an SSD with a reliable magnetic mount offers the greatest convenience here. It attaches directly to the back of the iPhone, eliminating the need for additional mounts or dangling cables. This minimises the risk of the connection being accidentally severed during a shoot and ensures a clean, professional setup.
ProRes files are very large. One minute of 4K ProRes HQ (30 fps) can already take up over 6 GB of storage space. For serious video projects, a fast portable SSD with 1TB or more is the recommended minimum size. Also, look for a rugged housing that can withstand shocks and vibrations to protect your data during mobile use.
Here are some recommendations tailored to different needs and workflows.
Why This Fits Their Persona: Ideal for users who frequently shoot on the go. The magnetic attachment, high 2TB capacity, and rugged, IP65-rated housing make this SSD a reliable tool for recording in a wide range of conditions.
MagSafe compatibility ensures a stable connection. The rugged design with dust and water protection (IP65) and drop protection up to 3 meters prevents failures during outdoor use.
Directly supports Apple ProRes 4K recording. The high durability (IP65) provides peace of mind during mobile shoots.
Why This Fits Their Persona: For users who value maximum performance, reliability, and brand quality. Although not magnetic, the T9 is a powerful choice for stationary setups or workflows where the SSD is securely mounted in a rig.
Samsung's "Dynamic Thermal Guard" feature actively prevents performance throttling due to overheating during long recording sessions. The brand stands for high manufacturing quality and reliability.
Very high read and write speeds (up to 2,000 MB/s). Effective thermal management for consistent performance.
Why This Fits Their Persona: An excellent choice for anyone looking for a reliable and spacious storage solution without paying for premium features like magnetic mounts or maximum transfer rates. The T7 offers excellent value for money.
It avoids the speed trap, as its USB 3.2 Gen 2 interface is perfectly matched to the maximum performance of the iPhone 15 Pro. You don't pay for unused potential. It's a proven model.
Large 2TB storage capacity at an attractive price. The speed is perfectly sufficient for ProRes recording with the iPhone 15 Pro.
We have compiled a complete, up-to-date list of products that fully meet these strict selection criteria and all relevant safety standards.
In theory, any external SSD with a USB-C port can be used with the iPhone 15 Pro. However, not every SSD is suitable for direct ProRes video recording. The crucial factor is that the SSD can maintain a sufficiently high and, above all, consistent write speed over a long period without being throttled by overheating. Models explicitly advertised for video recording are often the safer choice.
No, it is not mandatory. You can also use a conventional external SSD and attach it with Velcro or in a special smartphone rig, for example. However, a magnetic SSD offers a significant advantage in convenience and security, as it allows for a stable, cable-free attachment without additional accessories and minimises the risk of accidental disconnection.
The file sizes of ProRes videos are enormous. For the ProRes 422 HQ format in 4K at 30 fps, you should expect about 6 GB per minute. At 60 fps, this value nearly doubles. For users who regularly record longer clips or multiple projects, an SSD with at least 1TB of capacity is highly recommended. For professional or very active users, 2TB or more is a worthwhile investment to avoid constantly having to reorganise data.