Situation: Using latest Electrum android version I have an online smartphone that has the xpub but not the seed. This wallet has received some change on a specific address that I'd like to import to Jaxx. The seed owner, an offline cryptographed smartphone won't show that address in it's address list (because it was generated deterministically).

Question: Is there any way I can fetch that change address to the offline smartphone so I can export it's private key?

Thanks.