I don't have the backup seed phrase right now because I left it on my other house which is far away on my current location. I only have wallet.dat files save on my flash drive.
If your wallet file (
which shouldn't be "wallet.dat" unless you renamed it), isn't encrypted, you can just open it with a text editor;
and take note of the master private key (
search for "xprv": | then get the master key next to it) which should be written in plain text.
You can import that to your Mobile Electrum via "
Standard wallet->Use a master key".
The important note is this wont work if the wallet file or the secrets are encrypted.