iphoneusb
I know I could get a flash drive with a lightning jack or with both a lightning jack and a USB jack, but is it feasible to transfer files between an iPhone XR running iOS 13.3 and a USB flash drive using a lightning cable and a female-to-female USB connector as follows?
iPhone ? lightning to male USB cable ? female-to-female USB adaptor ?USB flash drive
The only official Lightning / Micro USB adapter sold by Apple is the Lightning to Micro USB adapter as shown below:
There doesn't seem to be an adapter for the reverse of this.
I use an apple camera connection kit adaptor to connect my iPad to both my RolandRD800 & Kurzweil Forte keyboards. My iPad runs the Unrealbook app which contains all my set lists & songs, and behind each song PDF is a midi HEX string which is sent to both keyboards automatically when I select a song, and this midi HEX string selects the correct patches on each keyboard I require to play the song.
Here is exactly how I set up my connections:
There you go. All good. Works a treat. You should now be connected.
NOTE: Your iPad will not charge from your Roland. There is no voltage at the Roland computer port connection to provide a charge. Also the iPad camera connection adaptor is not configured to provide charge to your iPad. It is made purely to connect to a camera and transfer photos.
Best Answer
This is not likely to work. The Lightning port on Apple devices work in many ways like the mini-USB On-The-Go ports from older phones and USB-C ports on newer phones. This means it can act as a USB host or device, just the means by which an iPhone determines which mode it should be in is different than how devices with USB-OTG ports do.
In USB device mode, which happens with a Lightning to USB-A male cable, the iPhone provides no power to the cable. This means that a female to female adapter which connects the data and power lines will not power the flash drive, and the flash drive will not have power to do anything. Connecting both to a powered hub so that both the phone and flash drive have power will still leave this USB bus with no host to initiate any communications.
It's unlikely any software on the iPhone will resolve this because the hardware on the phone is simply not made to act as a host when the hardware tells it to go into device mode.
USB from 1.1 on up was made to allow for host-to-device communications and what you describe is a device-to-device connection. USB 2.0 allows for ports to be switched into either host or device mode, but this is done in hardware. If there is a means to override this in software then it is violating the spec and could result in damaged hardware, if someone could find the software for this then you run the risk of damaging your iPhone the next time you try to charge it. USB 3.0 allows for host-to-host communications with the right kind of cable and software but the flash drive is simply not going to act as a USB host.
To make this work will mean violating the USB spec, and running the risk of permanent damage to your phone. There's going to be at a minimum software checks in the iOS to stop this from working, and quite likely the hardware in the iPhone simply will not enter host mode if it sees a USB-A male cable connected.