My phone has "only 256GB of storage" and I'm serious about recording to my phone and transferring the footage to an SSD as required. The transfer is done via the phone's Files function. With an iPhone 15 Pro and a high speed SSD, the rate of transfer is about 55GB of footage per minute, or just under 1GB per second. No need to have an SSD connected to the phone, and this frees up the phone's USB-C port for other functions if needed, such as audio.
A fellow named David Harry has tested transfer rate in two YouTube videos. He used an iPhone 15 Pro Max for both tests. In one video, he tested a Samsung 980 SSD, and in the other a Samsung T7. As you'll see below, the Samsung 980 is much faster, although the T7 does well enough for my purposes. Amazon's current price for a 1TB 980 is US$70, although the SSD requires an enclosure (not expensive). A 1TB T7 is $90.
- samsung 980 at amazon.jpg (82.73 KiB) Viewed 27344 times
This screen capture shows David Harry's results with the Samsung 980:
- 980 results.jpg (76.92 KiB) Viewed 27344 times
This is the 980 video:
Best and Fastest External USB-C SSD Drive for Your iPhone 15It's unfortunate what David Harry says about Gen 4 SSDs. I have two 2TB Samsung 980 Pro SSDs in Acacis enclosures. Note that word "Pro". These are not the same SSD as the Samsung 980. So far, people are not having success getting Gen 4 SSDs to work with an iPhone. It's possible that the iPhone doesn't supply enough power for Gen 4 SSDs, or that Apple has frozen out these SSDs out of concern about heat generation.
Due to forum requirements, I'll link David Harry's T7 video in the next post.