Can you please explain how do I get my passphrase from my desktop wallet so that I can restore it on the android wallet?
Open your desktop wallet, click Tools and then Debug console. In the window that opens click on the Console tab, then type the following into the text box below the window:
dumpprivkey your_wallet_address
And be careful not to disclose your private key to anyone!
I managed to get the private key, but I can't restore the wallet on android. I checked the "BIP39 passphrase" box and pasted the key, still not working.