I found something interesting:
Same file (10gb), same USB-C 3.2 cable:
- copy from Mac via Finder (Finder → iPhone → Files → add to an app's folder) = 6 minutes
- copy from SSD directly plugged-in on iPhone (via iOS Files app) = 10 seconds
🤔 What am I missing?
(copy from Mac to SSD is also done in ~10sec)
I too have found that:
Transfers between Mac and iPhone: Slow
Transfer between Mac/iPhone and SSD: Fast
Hardware:
15 Pro 256GB
M1 Macbook Pro
Samsung T7 and the included USBC cable
Yesterday I recorded a 43min long video in HVEC totalling 19GB. I connected phone and laptop using the USBC cable for my T7. I pressed sync and did chores around the house whilst waiting but even 15min later it looked like the progress bar was moving super slow like somewhere between USB1 and USB2. I thought that maybe the T7 cable isn't capable of 10GBit/sec.
However that wouldn't make sense as I have used it as an editing drive for my Mac. Furthermore it would be illogical of Samsung to ship an SSD with a cable that can't perform the advertised drive.
After reading all the posts in this thread this morning, I decided to plug the SSD to the phone. To my surprise, the file transferred in like 2min. Then I connected the SSD to the Mac and surprise surprise, the transfer was complete in well under a minute.
I hope that Apple will solve this issue so that we can sync using iTunes between iPhone and Mac at full USB3 speeds.