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iPhone 15 Pro iPhone 15 pro - USB-C definitely NOT operating at USB 3.2 gen 1 speeds (10gbps) data transfer is still just as slow as USB 2.0 / lightning cable.
- Thread starter MrRom92
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To make a point of reference is I have a Samsung Galaxy S23 Ultra which is a 3.2 Gen 1 USB C port that "can" do 5Gbps and I've never reached those speeds no matter the cable. I even did some research and not hitting those speeds isn't abnormal from what I've seen. I'm using a Dell XPS 17 9710 which have ports that are Thunderbolt 4 which are rated for speeds of 40Gbps.
I understand theoretical speeds are one thing and real world performance is another, but the iPhone 15 pro’s 10gbps USB 3 connection as advertised is at least on paper 20x faster than a 480mbps USB 2 connection
I didn’t get 20x faster, or 10x faster, or 5x faster. I didn’t even get 2x faster.
I got the exact same 480mbps speed as I would have on any other iPhone without that connection. That to me is a problem.
I didn’t get 20x faster, or 10x faster, or 5x faster. I didn’t even get 2x faster.
I got the exact same 480mbps speed as I would have on any other iPhone without that connection. That to me is a problem.
I'm using the USB-C/thunderbolt cable that came with my Mac, and the restore to my 15 Pro Max is taking a long time as well, about 3+ hours so far for 512GB
I'm guessing this just cut out the time it took to convert the photos/videos rather than making the transfer speed itself faster.
When you have it set to Automatic, it may convert your photos and videos to a compatible format on the fly as it's being transferred to your computer (HEIF -> JPEG; HEVC -> H.264). With Keep Originals, you are just taking what's on the iPhone and transferring it to your computer. If the computer isn't capable of viewing HEIF or HEVC media, then you'll have problems viewing them. This setting may not be for everyone.
What Mac do you have? I’m pretty sure that the USB-C cable that Apple provides to charge your Mac only supports 480Mbps.
Correct, it’s just a USB 2.0 Type C cable. Apple does not include Thunderbolt cables with any of their Macs.
Perhaps the fast transfer speed via usb-c is mainly for professional photographers who transmit hi-res images in real-time into external storage when taking photos.
How does one know if they have the right cable? Does it say anywhere on the cable itself what speed it is?
The older cables will have a USB logo that says SS 10 on the connector. The newer cables will say 10Gbps. At least that’s what USB-IF certified cables will show. However, I’m not sure if that means all cables missing the logo are not certified. It’s really quite a mess. I believe the only cables that are required to have a logo are Thunderbolt cables, so I was only buying those for a while just to be safe.
USB-IF certified cables (the ones everyone should be buying) are clearly labelled on the connector.
If the cable does not have a logo, does that really mean it's not certified by USB-IF? Even Apple's own USB-C cables for charging MacBooks don't have a 60w or 100w logo on them. Maybe the logo is only required above a certain speed and/or wattage.
For example, Plugable's USBC-C100 cable supports 10Gbps and 100W but doesn't have any of the fancy logos. However, Plugable says that it's USB-IF certified and even gives their Test ID number. I was able to find their cable on the USB-IF website, so it was definitely certified.
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I should have been more clear - logos were only required by USB-IF starting with USB4. So you will see only the newer cables with the logo.
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Apple doesn't do USB-IF certification for whatever reason. Only their TB4 cable is "certified" by Intel because it has the Thunderbolt logo.
Ok, that could have been it then. I was using the USB-C cable that came with a 2017-ish MBP
I used the original Apple Thunderbolt 4.0 Pro Cable which is the recommended one. Restoring from backup took 4 hours, which is as slow as it was with USB 2.0.
Foul marketing trick on Apple's part? If so, we can look forward to the next class action law suit 🤷♂️
Foul marketing trick on Apple's part? If so, we can look forward to the next class action law suit 🤷♂️
Just found this thread. I haven’t done any timings but want to say I have an Apple cable with the thunderbolt imprinted on both ends, I bought it Apple a year ago to use w/ iPad Pro. I backup via iTunes on my iMac 27” 2017 desktop. My iPhone has about 40 GB data.
On my old ‘X’ using lightening connection it to a long time, at least 10-15 min.
On my 15PM with the thunderbolt cable it takes maybe 3 or 4 minutes.
I don’t know if this is useful info, only to say my Apple T’bolt cable does the job quite quickly.
I’ll check on the file backup size & do a timing.
On my old ‘X’ using lightening connection it to a long time, at least 10-15 min.
On my 15PM with the thunderbolt cable it takes maybe 3 or 4 minutes.
I don’t know if this is useful info, only to say my Apple T’bolt cable does the job quite quickly.
I’ll check on the file backup size & do a timing.
From what I see with the different post on this topic and from personal experience with the 15PM is that when the iPhone is a usb host connected to an SSD, the file transfer is at usb 3.2 speeds. However when connected to a computer and the computer is the host when doing backups and syncs, we are only seeing USB 2.0 speeds.
I tested both scenarios with an M1 air and PC, 10Gbps cable where the Mac recognized the iPhone as a 10Gbps device, and a Samsung t7 shield ssd.
So it’s fast when transferring to an SSD, but slow to sync to a computer.
I tested both scenarios with an M1 air and PC, 10Gbps cable where the Mac recognized the iPhone as a 10Gbps device, and a Samsung t7 shield ssd.
So it’s fast when transferring to an SSD, but slow to sync to a computer.
I have tried 3 different USB-C cables. Not one of them will link up at more than 480Mb/s from the MBP16 M1 to the iPhone 15 Pro (per system profiler). All of them will link up at 5Gb/s (USB 3.0) with my external WD HDD.
Looks like a bug/hardware limitation with the iPhone.
Can anybody recommend an affordable non-Apple cable that will link up with the iPhone 15 Pro at > 480Mb/s?
Looks like a bug/hardware limitation with the iPhone.
Can anybody recommend an affordable non-Apple cable that will link up with the iPhone 15 Pro at > 480Mb/s?
I ended up buying a generic USB 3.2 cable off Amazon for about $15 that does connect at 10Gb to the 15 Pro. The problem is it's extremely thick and quite stiff, especially compared to the USB 2 cables from Apple. I now appreciate why Apple puts USB 2 cables in the box.
Just an update on some cables and syncing again but now after updating with Sonoma
I tested 3 cables with the T7 shield and all had fast read/write speeds (USB 3.2). ~1400/900 MB/s.
1) Fasgear 10Gbps USB-C cable from amazon
2) Apexsun short 40Gbps cable
3) The cable that came with the T7 shield
When connecting the IP15PM to the Macbook Air M1, only the Fasgear gets recognized as 10Gbps while the others 480Mbps.
I tried a sync again with the Mac. I'm happy to report that, although that it wasn't quite 10Gbps speed as I understand that the USB port on the M1 air is somewhat crippled, I saw that the speed was ~220MBps which I saw on activity monitor and I timed the transfer of 13.5Gb of data to the iPhone (approx 1min).
So there was a bit of improvement from before where I would only observe around 50MBps
The process overall of syncing felt faster than before updating to Sonoma.
I tested 3 cables with the T7 shield and all had fast read/write speeds (USB 3.2). ~1400/900 MB/s.
1) Fasgear 10Gbps USB-C cable from amazon
2) Apexsun short 40Gbps cable
3) The cable that came with the T7 shield
When connecting the IP15PM to the Macbook Air M1, only the Fasgear gets recognized as 10Gbps while the others 480Mbps.
I tried a sync again with the Mac. I'm happy to report that, although that it wasn't quite 10Gbps speed as I understand that the USB port on the M1 air is somewhat crippled, I saw that the speed was ~220MBps which I saw on activity monitor and I timed the transfer of 13.5Gb of data to the iPhone (approx 1min).
So there was a bit of improvement from before where I would only observe around 50MBps
The process overall of syncing felt faster than before updating to Sonoma.
So to add to this confusion I have Cord A and Cord B.
Cord A was only reporting USB 2.1
Cord B reported USB 3.1 Gen 2 (because I believe the iPhone is single lane and not dual lane which would be 20 Gbit/s)
I went back to Cord A and is now reporting as USB 3.1 Gen 2
Both cables are showing 10gbits rx and tx.
There is a bug in the Apple Pro Max's USB chipset drivers.
In the end none of that matters because the actual file transfer speed off the iPhone isn't reaching 10gbps speeds. a 1.50 GB file is taking well over 2 minutes to transfer. Same speeds as USB 2 cord and actually slower than USB 2 supports. That's sub 100 mbps I'm getting. Literally nothing has changed between the iphone 14 Pro and the iPhone 15 Pro for file transfer speeds to a desktop or laptop as it is right now.
Cord A was only reporting USB 2.1
Cord B reported USB 3.1 Gen 2 (because I believe the iPhone is single lane and not dual lane which would be 20 Gbit/s)
I went back to Cord A and is now reporting as USB 3.1 Gen 2
Both cables are showing 10gbits rx and tx.
There is a bug in the Apple Pro Max's USB chipset drivers.
In the end none of that matters because the actual file transfer speed off the iPhone isn't reaching 10gbps speeds. a 1.50 GB file is taking well over 2 minutes to transfer. Same speeds as USB 2 cord and actually slower than USB 2 supports. That's sub 100 mbps I'm getting. Literally nothing has changed between the iphone 14 Pro and the iPhone 15 Pro for file transfer speeds to a desktop or laptop as it is right now.
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