I'm wondering can Enigma be used for mixing of other coins? If so team can create different services built on this teach, right? Can we expect android wallet with Enigma transactions this would be very nice, i don't know if such thing existing?
Yes, as the underlying transactions are pretty standard, it could indeed be used for sending other coins. If we have a means of conducting cross-chain atomic swaps, we could make an Enigma coin exchange system or some other similar service - sure. A cross-chain atomic swap btw is where coins on both chains are swapped in the same operation with no way for one to be swapped and the other not.