Description:
Use Ledger Nano S / S+ with MetaMask Mobile via otg cable (usb)
Purpose:
Extend MM to other ledger users. A nano X version just for that purpose is expensive at the moment (price, battery issue, bluetooth only …)
Extension/Mobile/Both:
Mobile
Images/Attachments:
Hi @trim29 thank you so much for sharing 
we will pass your feedback on to the team 
Any progress on this?
Hi @tpawicki, there’s no changes/ updates on this at this time. This is what the Ledger knowledge base mentions regarding this:
“Please note that connecting your Ledger device to MetaMask mobile requires Bluetooth® and cannot be done via USB cable. As such, this feature is not available to Ledger Nano S Plus users.”
Ledger is not blocking this functionality. If that were the case, the device wouldn’t work with the MetaMask on Chrome via USB, which it clearly does.
The limitation comes from MetaMask Mobile, which currently supports Ledger connections only over Bluetooth.
It’s honestly a bit disappointing, considering the Nano S line is still one of the most widely used Ledger models.
iOS doesn’t allow the communications protocol needed for signing a txn via usb.
Android is a bit more flexible with OTG, but many manufacturers dont follow AOSP spec, making the codebase subject to a lot of variables (Android also has a history of large changes between OS releases)
It’s possible it could be added at some point down the road, but its not a priority at this time.
The architecture of Android / iOS is pretty different from a computer (x64 for most/ARM on M apples) as are the avail methods on each.
Thanks for the explanation.
I’m not sure about iOS, but on Android Ledger Live connects to Ledger via USB without issues, so it seems feasible there.
I understand it’s not a priority right now, appreciate the clarification.