Sorry if this is already asked by some1,
as I rmb I heard of this before, but dunno is it just a scam...
is there any BTC wallet there will provide you interest?

Wow...
I have to say that BTC wallet with interest would be something great, i would like to try it.
But i think that there is no really safe,fast wallet that can provide you interest, i bet some of those are just scam.