If you initially created your seed using Electrum, all you need to do is import that same seed in a new Electrum wallet on your new device. But if you have a BIP39 seed created with a different software/hardware wallet (I am not advocating for exporting seeds from hardware wallets into Electrum, and you shouldn't do it unless it's absolutely necessary), you will need to tick the BIP39 seed option in Electrum's settings when restoring your wallet. You also need to point the software to the right address format and derivation path. Electrum offers an option to scan default derivation paths automatically if you don't know how to set it manually.