Bitcoin Wallet Android - fee, trusted peers, time of transaction

[areyal]

Hi everybody,  newie here

 I have a problem with my android wallet: i made a payment from it to my wallet in the computer and it doesn't get done.
Later I realised that I had activated the "allow lower fee" in preferences, and leaved no fee in the payment. It is written that the payment made in that way likely will never get done.

So I thought if i could put in the field "trusted peers" the address of my wallet in the computer, maybe it could verify the payment.

Am I right? Is this "trusted peers" are made for? Should I start Bitcoin-Qt in my computer in server mode?

Thanks a lot!