You need an interface for communication between Electrum on Android and your hardware wallet it is not as straightforward as porting it from Windows to Android. Most of the hardware wallets uses USB and you'll have to use the phone's USB C port for communication which could be difficult.
I know that Ledger sells the required cables in their shop. They call it the
Ledger OTG Kit. Wouldn't that be enough to pair Electrum mobile and a Ledger hardware wallet?
It's a set with three different cables:
USB-C to Micro-USB
USB-A to Micro-USB
USB-C to USB-C
The price is ridiculous - €15, but cheaper alternatives can be purchased in tech shops.